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perilous

[ per-uh-luhs ]
/ ˈpɛr ə ləs /
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See synonyms for: perilous / perilously / perilousness on Thesaurus.com

adjective
involving or full of grave risk or peril; hazardous; dangerous: a perilous voyage across the Atlantic in a small boat.

OTHER WORDS FOR perilous

risky, unsafe.

OPPOSITES FOR perilous

nonhazardous, protected, safe.
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Origin of perilous

First recorded in 1250–1300; Middle English, from Anglo-French perillous, from Latin perīculōsus; see peril, -ous

OTHER WORDS FROM perilous

per·il·ous·ly, adverbper·il·ous·ness, nounnon·per·il·ous, adjectiveun·per·il·ous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use perilous in a sentence

British Dictionary definitions for perilous

perilous
/ (ˈpɛrɪləs) /

adjective
very hazardous or dangerousa perilous journey

Derived forms of perilous

perilously, adverbperilousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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