Customize the list of stopwords SearchWP uses by adding your own custom words

gistfile1.php

<?php

function my_searchwp_stopwords( $terms ) {
  // add 'lorem', 'ipsum', and 'dolor' to SearchWP's default terms
  $terms[] = 'lorem';
  $terms[] = 'ipsum';
  $terms[] = 'dolor';
  return $terms;
}

add_filter( 'searchwp_stopwords', 'my_searchwp_stopwords' );