Simple Definition of calamitous

from our Learner's Dictionary

calamitous

adjective

kəˈlæmətəs

formal : causing great harm or suffering : disastrous

a calamitous oil spill

the calamitous state of the nation's economy

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“Calamitous.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/calamitous. Accessed 20 Jun. 2026.

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