Check if two names are nicknames. List of nicknames taken from https://github.com/carltonnorthern/nickname-and-diminutive-names-lookup.

nickname.rb

def nickname?(name, name2)
  File.open('nicknames.csv').each do |line|
    names = line.strip.split(',')
    p names
    return true if names.include?(name) && names.include?(name2)
  end

  false
end

if nickname?('philip', 'phil')
  p 'yes'
else
  p 'no'
end

nicknames.csv

aaron,erin,ronnie,ron
abbie,abby,abigail
abe,abraham,abram
abednego,bedney
abel,ebbie,ab,abe,eb
abiel,ab
abigail,nabby,abby,gail
abijah,ab,bige
abner,ab
abraham,ab,abe
abram,ab
absalom,app,ab,abbie
ada,addy
adaline,delia,lena,dell,addy,ada
adam,edie,ade
addy,adele
adela,della
adelaide,heidi,adele,dell,addy,della
adelbert,del,albert,delbert,bert
adele,dell
adeline,delia,lena,dell,addy,ada
adelphia,philly,delphia,adele,dell,addy
adolphus,dolph,ado,adolph
adrian,rian
adrienne,adrian
agatha,aggy
agnes,inez,aggy,nessa
aileen,lena,allie
al,albert,bert,alex
alan,al
alanson,al,lanson
alastair,al
alazama,ali
albert,bert,al
alberta,bert,allie,bertie
aldo,al
aldrich,riche,rich
aleva,levy,leve
alex,alexandra,alexander
alexander,alex,al,sandy
alexandra,alex,sandy,alla,sandra
alexandria,drina,alexander,alla,sandra
alexis,lexi
alfonse,al
alfred,freddy,al,fred
alfreda,freddy,alfy,freda,frieda
algernon,algy
alice,lisa,elsie,allie
alicia,lisa,elsie,allie
aline,adeline
alison,ali
allan,al
allen,al
allisandra,allie
almena,mena,allie
almina,minnie
almira,myra
alonzo,lon,al,lonzo
alphinias,alphus
alverta,virdie,vert
alyssa,lissia,al,ally
alzada,zada
amanda,mandy,manda
ambrose,brose
amelia,amy,mel,millie,emily
amos,moses
anastasia,ana,stacy
anderson,andy
andrea,drea,rea,andrew
andrew,andy,drew
andy,andrew,drew
angela,angelica,angelina,angel,angeline,jane,angie
angelina,lina
ann,nana,nan,nancy,annie,nanny
anna,anne,ann,annie
anne,annie,nana,ann,nan,nanny,nancy
annette,anna,nettie
annie,ann,anna
anselm,ansel,selma,anse,ance
anthony,tony
antoinette,tony,netta,ann
antonia,tony,netta,ann
appoline,appy,appie
aquilla,quil,quillie
ara,belle,arry
arabella,ara,bella,arry,belle
arabelle,ara,bella,arry,belle
araminta,armida,middie,ruminta,minty
archibald,archie
archilles,kill,killis
ariadne,arie
arielle,arie
aristotle,telly
arizona,onie,ona
arlene,arly,lena
armanda,mandy
armena,mena,arry
armilda,milly
arminda,mindie
arminta,minite,minnie
arnold,arnie
art,arthur
artelepsa,epsey
artemus,art
arthur,art
arthusa,thursa
arzada,zaddi
asahel,asa
asaph,asa
asenath,sene,assene,natty
aubrey,bree
audrey,dee
august,gus
augusta,tina,aggy,gatsy,gussie
augustina,tina,aggy,gatsy,gussie
augustine,gus,austin,august
augustus,gus,austin,august
aurelia,ree,rilly,orilla,aurilla,ora
avarilla,rilla
azariah,riah,aze
bab,barby
babs,barby,barbara,bab
barbara,barby,babs,bab,bobbie
barbery,barbara
barbie,barbara
barnabas,barney
barney,barnabas
bart,bartholomew
bartholomew,bartel,bat,meus,bart,mees
barticus,bart
bazaleel,basil
bea,beatrice
beatrice,bea,trisha,trixie,trix
becca,beck
beck,becky
bedelia,delia,bridgit
belinda,belle,linda
bella,belle,arabella,isabella
ben,benjamin,bennie
benedict,bennie,ben
benjamin,benjy,jamie,bennie,ben
benjy,benjamin
bernard,barney,bernie,berney
berney,bernie
bert,bertie,bob,bobby
bertha,bert,birdie,bertie
bertram,bert
bess,bessie
beth,betsy,betty,elizabeth
bethena,beth,thaney
beverly,bev
bezaleel,zeely
biddie,biddy
bill,william,billy,robert,willie,fred
billy,william,robert,fred
blanche,bea
bob,rob,robert
bobby,rob,bob
boetius,bo
brad,bradford,ford
bradford,ford,brad
brady,brody
brenda,brandy
brian,bryan,bryant
bridget,bridie,biddy,bridgie,biddie
brittany,britt
broderick,ricky,brody,brady,rick
cal,calvin
caldonia,calliedona
caleb,cal
california,callie
calista,kissy
calpurnia,cally
calvin,vin,vinny,cal
cameron,ron,cam,ronny
camille,millie,cammie
campbell,cam
candace,candy,dacey
carlotta,lottie
carlton,carl
carmellia,mellia
carmon,charm,cammie,carm
carol,lynn,carrie,carolann,cassie,caroline,carole
carolann,carol,carole
caroline,lynn,carol,carrie,cassie,carole
carolyn,lynn,carrie,cassie
carrie,cassie
carthaette,etta,etty
casey,k.c.
casper,jasper
cassandra,sandy,cassie,sandra
cassie,cassandra
caswell,cass
catherine,kathy,katy,lena,kittie,kit,trina,cathy,kay,cassie
cathleen,kathy,katy,lena,kittie,kit,trina,cathy,kay,cassie
cathy,kathy,cathleen,catherine
cecilia,cissy,celia
cedric,ced,rick,ricky
celeste,lessie,celia
celinda,linda,lynn,lindy
charity,chat
charles,charlie,chuck,carl,chick
charlie,charles,chuck
charlotte,char,sherry,lottie,lotta
chauncey,chan
cher,sher
cheryl,sheryl
chesley,chet
chester,chet
chet,chester
chick,charlotte,caroline,chuck
chloe,clo
chris,christina,christopher,christine
christa,chris
christian,chris,kit
christiana,kris,kristy,ann,tina,christy,chris,crissy
christina,kris,kristy,tina,christy,chris,crissy
christine,kris,kristy,chrissy,tina,chris,crissy
christopher,chris,kit
christy,crissy
cicely,cilla
cinderella,arilla,rella,cindy,rilla
cindy,cinderlla
claire,clair,clare,clara
clara,clarissa
clare,clara
clarence,clare,clair
clarinda,clara
clarissa,cissy,clara
claudia,claud
cleatus,cleat
clement,clem
clementine,clement,clem
cliff,clifford,cliff
clifford,ford,cliff
clifton,tony,cliff
cole,colie
columbus,clum
con,conny
conrad,conny,con
constance,connie
cordelia,cordy,delia
corey,coco,cordy,ree
corinne,cora,ora
cornelia,nelly,cornie,nelia,corny,nelle
cornelius,conny,niel,corny,con
cory,coco,cordy,ree
courtney,curt,court
crystal,chris,tal,stal,crys
curt,curtis
curtis,curt
cy,cyrus
cynthia,cintha,cindy
cyrenius,swene,cy,serene,renius,cene
cyrus,cy
daisy,margaret
dal,dahl
dalton,dahl
dan,danny,daniel
daniel,dan,danny
danielle,ellie,dani
danny,daniel
daphne,daph,daphie
darlene,lena,darry
dave,david
davey,david
david,dave,day,davey
deanne,ann,dee
deb,deborah,debra
debbie,deb,debra,deborah,debby
debby,deb
debora,deb,debbie,debby
deborah,deb,debbie,debby
debra,deb,debbie
deidre,deedee
delbert,bert,del
delia,fidelia,cordelia,delius
delilah,lil,lila,dell,della
deliverance,delly,dilly,della
dell,della
della,adela,delilah,adelaide
delores,lolly,lola,della,dee,dell
delpha,philadelphia
delphine,delphi,del,delf
demaris,dea,maris,mary
demerias,dea,maris,mary
democrates,mock
denise,dennis
dennis,denny
dennison,denny
derrick,ricky,eric,rick
deuteronomy,duty
diana,dicey,didi,di
diane,dicey,didi,di
dicey,dicie
dick,rick,richard
dickson,dick
domenic,dom
dominic,dom
don,donald
donald,dony,donnie,don,donny
donnie,donald,donny
donny,donald
dorcus,darkey
dorinda,dorothea,dora
doris,dora
dorothea,doda,dora
dorothy,dortha,dolly,dot,dotty
dot,dotty
dotha,dotty
douglas,doug
drew,andrew
drusilla,silla
duncan,dunk
earnest,ernestine,ernie
eb,ebbie
ebenezer,ebbie,eben,eb
ed,eddie,eddy
eddie,eddy
edgar,ed,eddie,eddy
edith,edie,edye
edmond,ed,eddie,eddy
edmund,ed,eddie,ted,eddy,ned
edna,edny
eduardo,ed,eddie,eddy
edward,teddy,ed,ned,ted,eddy,eddie
edwin,ed,eddie,win,eddy,ned
edwina,edwin
edyth,edie,edye
edythe,edie,edye
egbert,bert,burt
eighta,athy
eileen,helen
elaine,lainie,helen
elbert,albert
elbertson,elbert,bert
eleanor,lanna,nora,nelly,ellie,elaine,ellen,lenora
eleazer,lazar
elena,helen
elias,eli,lee,lias
elijah,lige,eli
eliphalel,life
eliphalet,left
elisa,lisa
elisha,lish,eli
eliza,elizabeth
elizabeth,libby,lisa,lib,lizzie,eliza,betsy,liza,betty,bessie,bess,beth,liz
ella,ellen
ellen,nellie,nell,helen
ellender,nellie,ellen,helen
ellie,elly
ellswood,elsey
elminie,minnie
elmira,ellie,elly,mira
elnora,nora
eloise,heloise,louise
elouise,louise
elsie,elsey
elswood,elsey
elvira,elvie
elwood,woody
elysia,lisa
elze,elsey
emanuel,manuel,manny
emeline,em,emmy,emma,milly,emily
emil,emily
emily,emmy,millie,emma,mel
emma,emmy
epaphroditius,dite,ditus,eppa,dyche,dyce
ephraim,eph
erasmus,raze,rasmus
eric,rick,ricky
ernest,ernie
ernestine,teeny,ernest,tina,erna
erwin,irwin
eseneth,senie
essy,es
estella,essy,stella
estelle,essy,stella
esther,hester,essie
eudicy,dicey
eudora,dora
eudoris,dossie,dosie
eugene,gene
eunice,nicie
euphemia,effie,effy
eurydice,dicey
eustacia,stacia,stacy
eva,eve
evaline,eva,lena,eve
evangeline,ev,evan,vangie
evelyn,evelina,ev,eve
experience,exie
ezekiel,zeke,ez
ezideen,ez
ezra,ez
faith,fay
felicia,fel,felix,feli
felicity,flick,tick
feltie,felty
ferdinand,freddie,freddy,ferdie,fred
ferdinando,nando,ferdie,fred
fidelia,delia
flo,florence
flora,florence
florence,flossy,flora,flo
floyd,lloyd
fran,frannie
frances,sis,cissy,frankie,franniey,fran,francie,frannie,fanny
francie,francine
francine,franniey,fran,frannie,francie
francis,fran,frankie,frank
frank,franklin
frankie,frank,francis
franklin,fran,frank
franklind,frank
fred,freddy,frederick
freda,frieda
frederica,frederick
frederick,freddie,freddy,fritz,fred
fredericka,freddy,ricka,freda,frieda
frieda,freddie,freddy,fred
gabby,gabriella,gabe,gabrielle
gabe,gabriel
gabriel,gabe,gabby
gabriella,ella,gabby
gabrielle,ella,gabby
genevieve,jean,eve,jenny
geoff,geoffrey,jeffrey,jeff
geoffrey,geoff,jeff
george,jorge,georgiana
georgia,george,georgiana
gerald,gerry,jerry
geraldine,gerry,gerrie,jerry,dina
gerhardt,gay
gerrie,geraldine
gerry,gerald,geraldine,jerry
gert,gertie
gertie,gertrude
gertrude,gertie,gert,trudy
gil,gilbert
gilbert,bert,gil,wilber
gloria,glory
governor,govie
greenberry,green,berry
gregory,greg
gretchen,margaret
griselda,grissel
gum,monty
gus,gussie
gustavus,gus
gwen,gwendolyn,wendy
gwendolyn,gwen,wendy
hamilton,ham
hannah,nan,nanny,anna
harold,hal,harry
harriet,hattie
harry,harold,henry
haseltine,hassie
heather,hetty
helen,lena,ella,ellen,ellie
helena,eileen,lena,nell,nellie,eleanor,elaine,ellen,aileen
helene,lena,ella,ellen,ellie
heloise,lois,eloise,elouise
henrietta,hank,etta,etty,retta,nettie
henry,hank,hal,harry
hephsibah,hipsie
hepsibah,hipsie
herb,herbert
herbert,bert,herb
herman,harman,dutch
hermione,hermie
hester,hessy,esther,hetty
hezekiah,hy,hez,kiah
hiram,hy
honora,honey,nora,norry,norah
hopkins,hopp,hop
horace,horry
hortense,harty,tensey
hosea,hosey,hosie
howard,hal,howie
hubert,bert,hugh,hub
ian,john
ignatius,natius,iggy,nate,nace
ignatzio,naz,iggy,nace
immanuel,manuel,emmanuel
india,indie,indy
inez,agnes
iona,onnie
irene,rena
irvin,irving
irving,irv
irwin,erwin
isaac,ike,zeke
isabel,tibbie,bell,nib,belle,bella,nibby,ib,issy
isabella,tibbie,nib,belle,bella,nibby,ib,issy
isabelle,tibbie,nib,belle,bella,nibby,ib,issy
isadora,issy,dora
isaiah,zadie,zay
isidore,izzy
iva,ivy
ivan,john
jackson,jack
jacob,jaap,jake,jay
jacobus,jacob
jacqueline,jackie,jack
jahoda,hody,hodie,hoda
james,jimmy,jim,jamie,jimmie,jem
jamie,james,ben
jane,janie,jessie,jean,jennie
janet,jan,jessie
janice,jan
jannett,nettie
jasper,jap,casper
jayme,jay
jean,jane,jeannie
jeanette,jessie,jean,janet,nettie
jeanne,jane,jeannie
jeb,jebadiah
jedediah,dyer,jed,diah
jedidiah,jed
jeff,geoffrey,jeffrey
jefferey,jeff
jefferson,sonny,jeff
jeffrey,geoff,jeff
jehiel,hiel
jehu,hugh,gee
jemima,mima
jennet,jessie,jenny
jennifer,jennie
jenny,jennifer
jeremiah,jereme,jerry
jerita,rita
jerry,jereme,geraldine
jessica,jessie
jessie,jane,jess,janet
jim,jimmie
jincy,jane
jinsy,jane
joan,jo,nonie
joann,jo
joanna,hannah,jody,jo,joan
joanne,jo
jody,jo
joe,joseph,joey
joey,joseph
johanna,jo
johannah,hannah,jody,joan,nonie
johannes,jonathan,john,johnny
john,jack,johnny,jock
jon,john,nathan
jonathan,john,nathan
joseph,jody,jos,joe,joey
josephine,fina,jody,jo,josey,joey
josetta,jettie
josey,josophine
josh,joshua
joshua,jos,josh
josiah,jos
joyce,joy
juanita,nita,nettie
judah,juder,jude
judith,judie,juda,judy,judi,jude
judson,sonny,jud
judy,judith
julia,julie,jill
julian,jule
julias,jule
julie,julia,jule
june,junius
junior,junie,june,jr
justin,justus,justina
karonhappuck,karon,karen,carrie,happy
kasey,k.c.
katarina,catherine,tina
kate,kay
katelin,kay,kate,kaye
katelyn,kay,kate,kaye
katherine,kathy,katy,lena,kittie,kaye,kit,trina,cathy,kay,kate,cassie
kathleen,kathy,katy,lena,kittie,kit,trina,cathy,kay,cassie
kathryn,kathy
katy,kathy
kayla,kay
ken,kenneth
kendall,ken,kenny
kendra,kenj,kenji,kay,kenny
kendrick,ken,kenny
kenneth,ken,kenny,kendrick
kenny,ken,kenneth
kent,ken,kenny,kendrick
keziah,kizza,kizzie
kim,kimberly,kimberley
kimberley,kim
kimberly,kim
kingsley,king
kingston,king
kit,kittie
kris,chris
kristel,kris
kristen,chris
kristin,chris
kristine,kris,kristy,tina,christy,chris,crissy
kristopher,chris,kris
kristy,chris
lafayette,laffie,fate
lamont,monty
laodicia,dicy,cenia
larry,laurence,lawrence
lauren,ren,laurie
laurence,lorry,larry,lon,lonny,lorne
laurinda,laura,lawrence
lauryn,laurie
laveda,veda
laverne,vernon,verna
lavina,vina,viney,ina
lavinia,vina,viney,ina
lavonia,vina,vonnie,wyncha,viney
lavonne,von
lawrence,lorry,larry,lon,lonny,lorne
leanne,lea,annie
lecurgus,curg
lemuel,lem
lena,ellen
lenora,nora,lee
leo,leon
leonard,lineau,leo,leon,len,lenny
leonidas,lee,leon
leonora,nora,nell,nellie
leonore,nora,honor,elenor
leroy,roy,lee,l.r.
les,lester
leslie,les
lester,les
letitia,tish,titia,lettice,lettie
levi,lee
levicy,vicy
levone,von
lib,libby
lidia,lyddy
lil,lilly,lily
lillah,lil,lilly,lily,lolly
lillian,lil,lilly,lolly
lilly,lily
lincoln,link
linda,lindy,lynn
lindy,lynn
lionel,leon
lisa,lizzie,alice,liz,melissa
littleberry,little,berry,l.b.
liz,elizabeth
lizzie,elizabeth,liz
lois,lou,louise
lon,lonzo
lorenzo,loren
loretta,etta,lorrie,retta
lorraine,lorrie
lotta,lottie
lou,louis,lu
louis,lewis,louise,louie,lou
louisa,eliza,lou,lois
louise,eliza,lou,lois
louvinia,vina,vonnie,wyncha,viney
lucas,luke
lucia,lucy,lucius
lucias,luke
lucille,cille,lu,lucy,lou
lucina,sinah
lucinda,lu,lucy,cindy,lou
lucretia,creasey
lucy,lucinda
luella,lula,ella,lu
luke,lucas
lunetta,nettie
lurana,lura
luther,luke
lydia,lyddy
lyndon,lindy,lynn
mabel,mehitabel,amabel
mac,mc
mack,mac,mc
mackenzie,kenzy,mac,mack
maddy,madelyn,madeline,madge
madeline,maggie,lena,magda,maddy,madge
madie,madeline,madelyn
madison,mattie,maddy
magdalena,maggie,lena
magdelina,lena,magda,madge
mahala,hallie
malachi,mally
malcolm,mac,mal,malc
malinda,lindy
manda,mandy
mandy,amanda
manerva,minerva,nervie,eve,nerva
manny,manuel
manoah,noah
manola,nonnie
manuel,emanuel,manny
marcus,mark
margaret,maggie,meg,peg,midge,margy,margie,madge,peggy,maggy,marge,daisy,margery,gretta,rita
margaretta,maggie,meg,peg,midge,margie,madge,peggy,marge,daisy,margery,gretta,rita
margarita,maggie,meg,metta,midge,greta,megan,maisie,madge,marge,daisy,peggie,rita,margo
marge,margery,margaret,margaretta
margie,marjorie,margie
marguerite,peggy
margy,marjorie
mariah,mary,maria
marian,marianna,marion
marie,mae
marietta,mariah,mercy,polly,may,molly,mitzi,minnie,mollie,mae,maureen,marion,marie,mamie,mary,maria
marilyn,mary
marion,mary
marissa,rissa
marjorie,margy,margie
marsha,marcie,mary
martha,marty,mattie,mat,patsy,patty
martin,marty
martina,tina
martine,tine
marv,marvin
marvin,marv
mary,mamie,molly,mae,polly,mitzi
mat,mattie
mathilda,tillie,patty
matilda,tilly,maud,matty
matt,mathew,matthew
matthew,thys,matt,thias,mattie,matty
matthias,thys,matt,thias
maud,middy
maureen,mary
maurice,morey
mavery,mave
mavine,mave
maxine,max
may,mae
mckenna,ken,kenna,meaka
medora,dora
megan,meg
mehitabel,hetty,mitty,mabel,hitty
melanie,mellie
melchizedek,zadock,dick
melinda,linda,mel,lynn,mindy,lindy
melissa,lisa,mel,missy,milly,lissa
mellony,mellia
melody,lodi
melvin,mel
melvina,vina
mercedes,merci,sadie,mercy
merv,mervin
mervyn,merv
micajah,cage
michael,micky,mike,micah,mick
michelle,mickey
mick,micky
mike,micky,mick,michael
mildred,milly
millicent,missy,milly
minerva,minnie
minnie,wilhelmina
miranda,randy,mandy,mira
miriam,mimi,mitzi,mitzie
missy,melissa
mitch,mitchell
mitchell,mitch
mitzi,mary,mittie,mitty
mitzie,mittie,mitty
monet,nettie
monica,monna,monnie
monteleon,monte
montesque,monty
montgomery,monty,gum
monty,lamont
morris,morey
mortimer,mort
moses,amos,mose,moss
muriel,mur
myrtle,myrt,myrti,mert
nadine,nada,deedee
nancy,ann,nan,nanny
naomi,omi
napoleon,nap,nappy,leon
natalie,natty,nettie
natasha,tasha,nat
nathan,nate,nat
nathaniel,than,nathan,nate,nat,natty
nelle,nelly
nelson,nels
newt,newton
nicholas,nick,claes,claas
nick,nik,nicholas
nickie,nicholas
nicodemus,nick
nicole,nole,nikki,cole
nik,nick
nora,nonie
norbert,bert,norby
nowell,noel
obadiah,dyer,obed,obie,diah
obedience,obed,beda,beedy,biddie
obie,obediah
octavia,tave,tavia
odell,odo
olive,nollie,livia,ollie
oliver,ollie
olivia,nollie,livia,ollie
ollie,oliver
onicyphorous,cyphorus,osaforus,syphorous,one,cy,osaforum
orilla,rilly,ora
orlando,roland
orphelia,phelia
ossy,ozzy
oswald,ozzy,waldo,ossy
otis,ode,ote
ozzy,oswald
pamela,pam
pandora,dora
parmelia,amelia,milly,melia
parthenia,teeny,parsuny,pasoonie,phenie
pat,patrick,pat,patricia
patience,pat,patty
patricia,tricia,pat,patsy,patty
patrick,pate,peter,pat,patsy,paddy
patsy,patty
patty,patricia
paul,polly,paula,pauline
paula,polly,lina
paulina,polly,lina
pauline,polly
peg,peggy
pelegrine,perry
penelope,penny
percival,percy
peregrine,perry
permelia,melly,milly,mellie
pernetta,nettie
persephone,seph,sephy
pete,peter
peter,pete,pate
petronella,nellie
pheney,josephine
pheriba,pherbia,ferbie
phil,phillip,philip
philadelphia,delphia
philander,fie
philetus,leet,phil
philinda,linda,lynn,lindy
philip,phil
philipina,phoebe,penie
phillip,phil
philly,delphia
philomena,menaalmena
phoebe,fifi
pinckney,pink
pleasant,ples
pocahontas,pokey
posthuma,humey
prescott,scotty,scott,pres
priscilla,prissy,cissy,cilla
providence,provy
prudence,prue,prudy
prudy,prudence
rachel,shelly
rafaela,rafa
ramona,mona
randolph,dolph,randy
raphael,ralph
ray,raymond
raymond,ray
reba,beck,becca
rebecca,beck,becca,reba,becky
reg,reggie
reggie,reginald
regina,reggie,gina
reginald,reggie,naldo,reg,renny
relief,leafa
reuben,rube
reynold,reginald
rhoda,rodie
rhodella,della
rhyna,rhynie
ricardo,rick,ricky
rich,dick,rick,riche,richard
richard,dick,dickon,dickie,dicky,rick,rich,ricky
richie,richard
rick,ricky
ricky,dick,rich
robert,hob,hobkin,dob,rob,bobby,dobbin,bob
roberta,robbie,bert,bobbie,birdie,bertie
roderick,rod,erick,rickie
rodger,roge,bobby,hodge,rod,robby,rupert,robin
roger,roge,bobby,hodge,rod,robby,rupert,robin
roland,rollo,lanny,orlando,rolly
ron,ronald,ronnie,ronny
ronald,naldo,ron,ronny
ronnie,ronald
ronny,ronald
rosa,rose
rosabel,belle,roz,rosa,rose
rosabella,belle,roz,rosa,rose
rosalinda,linda,roz,rosa,rose
rosalyn,linda,roz,rosa,rose
roscoe,ross
rose,rosie
roseann,rose,ann,rosie,roz
roseanna,rose,ann,rosie,roz
roseanne,ann
rosina,sina
roxane,rox,roxie
roxanna,roxie,rose,ann
roxanne,roxie,rose,ann
roz,rosalyn
rube,reuben
rudolph,dolph,rudy,olph,rolf
rudolphus,dolph,rudy,olph,rolf
rudy,rudolph
russ,russell
russell,russ,rusty
rusty,russell
ryan,ry
sabrina,brina
salome,loomie
salvador,sal
sam,sammy,samuel
samantha,sammy,sam,mantha
sammy,samuel
sampson,sam
samson,sam
samuel,sammy,sam
samyra,myra
sandra,sandy,cassandra
sandy,sandra
sanford,sandy
sarah,sally,sadie
sarilla,silla
savannah,vannie,anna
scott,scotty,sceeter,squat,scottie
sebastian,sebby,seb
selma,anselm
serena,rena
serilla,rilla
seymour,see,morey
shaina,sha,shay
sharon,sha,shay
sheila,cecilia
sheldon,shelly
shelton,tony,shel,shelly
sheridan,dan,danny,sher
sheryl,sher
shirley,sherry,lee,shirl
sibbilla,sybill,sibbie,sibbell
sidney,syd,sid
sigfired,sid
sigfrid,sid
sigismund,sig
silas,si
silence,liley
silvester,vester,si,sly,vest,syl
simeon,si,sion
simon,si,sion
sly,sylvester
smith,smitty
socrates,crate
solomon,sal,salmon,sol,solly,saul,zolly
sondra,dre,sonnie
sophia,sophie
sophronia,frona,sophia,fronia
stephan,steve
stephanie,stephen,stephie,annie,steph
stephen,steve,steph
steve,stephen,steven
steven,steve,steph
stuart,stu
sue,susie,susan
sullivan,sully,van
sully,sullivan
susan,hannah,susie,sue,sukey,suzie
susannah,hannah,susie,sue,sukey
susie,suzie
suzanne,suki,sue,susie
sybill,sibbie
sydney,sid
sylvanus,sly,syl
sylvester,sy,sly,vet,syl,vester,si,vessie
tabby,tabitha
tabitha,tabby
tamarra,tammy
tanafra,tanny
tasha,tash,tashie
ted,teddy
temperance,tempy
terence,terry
teresa,terry
terry,terence
tess,teresa,theresa
tessa,teresa,theresa
thad,thaddeus
thaddeus,thad
theo,theodore
theodora,dora
theodore,theo,ted,teddy
theodosia,theo,dosia,theodosius
theophilus,ophi
theotha,otha
theresa,tessie,thirza,tessa,terry,tracy,tess,thursa
thom,thomas,tommy,tom
thomas,thom,tommy,tom
thomasa,tamzine
tiffany,tiff,tiffy
tilford,tillie
tim,timothy,timmy
timmy,timothy
timothy,tim,timmy
tina,christina
tobias,bias,toby
tom,thomas,tommy
tommy,thomas
tony,anthony
tranquilla,trannie,quilla
trisha,patricia
trix,trixie
trudy,gertrude
tryphena,phena
unice,eunice,nicie
uriah,riah
ursula,sulie,sula
valentina,felty,vallie,val
valentine,felty
valeri,val
valerie,val
vanburen,buren
vandalia,vannie
vanessa,essa,vanna,nessa
vernisee,nicey
veronica,vonnie,ron,ronna,ronie,frony,franky,ronnie
vic,vicki,victor,vicky
vicki,vicky,victoria
vickie,victoria
vicky,victoria
victor,vic
victoria,torie,vic,vicki,tory,vicky
vin,vinny
vince,vinnie
vincent,vic,vince,vinnie,vin,vinny
vincenzo,vic,vinnie,vin,vinny
vinson,vinny
viola,ola,vi
violetta,lettie
virginia,jane,jennie,ginny,virgy,ginger
vivian,vi,viv
waldo,ozzy,ossy
wallace,wally
wally,walt
walter,wally,walt
washington,wash
webster,webb
wendy,wen
wilber,will,bert
wilbur,willy,willie
wilda,willie
wilfred,will,willie,fred
wilhelmina,mina,wilma,willie,minnie
will,bill,willie,wilbur,fred
william,willy,bell,bela,bill,will,billy,willie
willie,william,fred
willis,willy,bill
wilma,william,billiewilhelm
wilson,will,willy,willie
winfield,field,winny,win
winifred,freddie,winnie,winnet
winnie,winnifred
winnifred,freddie,freddy,winny,winnie,fred
winny,winnifred
winton,wint
woodrow,woody,wood,drew
yeona,onie,ona
yulan,lan,yul
yvonne,vonna
zach,zachariah
zachariah,zachy,zach,zeke
zebedee,zeb
zedediah,dyer,zed,diah
zephaniah,zeph