Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary




Synonyms and Antonyms of fissure

  1. an irregular usually narrow break in a surface created by pressure <lava flows up through a fissure in the earth's crust> Synonyms check, chink, cleft, cranny, crevice, crack, rift, splitRelated Words crevasse; craze, hairline; fracture, rupture; breach, gap, opening; cut, gash, incision, slit

Learn More about fissure

Seen and Heard

What made you want to look up fissure? Please tell us where you read or heard it (including the quote, if possible).