Here's what rhymes with foresail.
                        
                        
                    
                                fail  sale  sail  veil  hail  shale  vale  hale  faille  male  scale  mail  pale  tail  tale  avail  jail  nail  rail  frail  gale  whale  bail  stale  wail  assail  bale  dale  pail  snail  flail  kale  wale  trail  prevail  email  travail  inhale  quail  quale  braille  topsail  unveil  grail  wassail  hightail  lugsail  detail  entail  curtail  exhale  bewail  derail  mainsail  impale  monorail  taffrail  bobtail  swallowtail  pellmell  carrell  gunwale  pigtail  martingale  hangnail  fingernail  ponytail  countervail  nonpareil  tattletale