disastrous

[dih-zas-truh s, -zah-struh s]
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adjective
  1. causing great distress or injury; ruinous; very unfortunate; calamitous: The rain and cold proved disastrous to his health.
  2. Archaic. foreboding disaster.

Origin of disastrous

1580–90; < Middle French desastreux, Italian disastroso. See disaster, -ous
Related formsdis·as·trous·ly, adverbdis·as·trous·ness, nounnon·dis·as·trous, adjectivenon·dis·as·trous·ly, adverbnon·dis·as·trous·ness, nounpre·dis·as·trous, adjectivepre·dis·as·trous·ly, adverbqua·si-dis·as·trous, adjectivequa·si-dis·as·trous·ly, adverbun·dis·as·trous, adjectiveun·dis·as·trous·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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Word Origin and History for disastrously

disastrous

adj.

1580s, "ill-starred," from French désastreux (16c.), from désastre (see disaster) or from Italian desastroso. Meaning "calamitous" is from c.1600. Related: Disastrously.

Online Etymology Dictionary, © 2010 Douglas Harper