Jack-a-lantern Jack-a-lantern antonyms If you know antonyms for Jack-a-lantern, then you can share it. Suggest antonym for Jack-a-lantern Jack-a-lantern synonyms jack-o-lantern Omphalotus illudens agaric If you know synonyms for Jack-a-lantern, then you can share it. Suggest synonym for Jack-a-lantern