Jack-o-lantern Jack-o-lantern antonyms If you know antonyms for Jack-o-lantern, then you can share it. Suggest antonym for Jack-o-lantern Jack-o-lantern synonyms ignis fatuus jack-a-lantern fruit squash fen-fire vine gourd pepo Omphalotus illudens wisp will-with-the-wisp Full list of synonyms (12)