Synonyms of calamitous

18 similar words · 1 opposite word

Another word for calamitous is disastrous. Other synonyms of calamitous are fatal, ruinous, woeful, debacular and harmful. The opposite of calamitous is uncalamitous.

Synonyms and similar words for calamitous

apocalyptic
cataclysmalAs noisy or destructive as a cataclysm.
cataclysmicOf or pertaining to a cataclysm; causing great destruction or upheaval; catastrophic.
catastrophic
deadly
debacularOf, like, or pertaining to a debacle; calamitous; tragic; suddenly shameful.
destructive
devastatingCausing devastation.
disastrousOf the nature of a disaster; calamitous.
eradicativeTending or serving to eradicate; curing or destroying thoroughly, as a disease or any evil.
extirpativeOf, relating to, or pertaining to an extirpation.
fatalCausing death or destruction.
harmfulCausing or likely to cause harm or damage; injurious.
lethalOf, pertaining to, or causing death; deadly; mortal; fatal.
pernicious
ruinousCausing ruin; destructive, calamitous.
woefulBringing calamity, distress, or affliction.
disadventurous obsoleteUnfortunate; calamitous.

What is another word for calamitous?: Calamitous has 18 synonyms on Word.ws, such as disastrous, fatal, ruinous, woeful, debacular, harmful, lethal and devastating.
What is the opposite of calamitous?: The opposite of calamitous is uncalamitous.
What does calamitous mean?: Calamitous means causing or involving calamity; disastrous.

Adapted from Wiktionary: calamitous (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this page: “Synonyms of calamitous.” Word.ws, https://word.ws/synonyms/calamitous. Based on Wiktionary, CC BY-SA 4.0.