dangerous

[ deyn-jer-uhs, deynj-ruhs ]
See synonyms for: dangerousdangerously on Thesaurus.com

adjective
  1. full of danger or risk; causing danger; perilous; risky; hazardous; unsafe.

  2. able or likely to cause physical injury: a dangerous criminal.

Origin of dangerous

1
First recorded in 1175–1225; Middle English da(u)ngerous “domineering, fraught with danger,” from Old French dangereus “threatening, difficult,” equivalent to dangier (see danger) + -eus -ous

Other words from dangerous

  • dan·ger·ous·ly, adverb
  • dan·ger·ous·ness, noun
  • non·dan·ger·ous, adjective
  • non·dan·ger·ous·ly, adverb
  • non·dan·ger·ous·ness, noun
  • qua·si-dan·ger·ous, adjective
  • qua·si-dan·ger·ous·ly, adverb
  • sem·i·dan·ger·ous, adjective
  • sem·i·dan·ger·ous·ly, adverb
  • sem·i·dan·ger·ous·ness, noun
  • un·dan·ger·ous, adjective
  • un·dan·ger·ous·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use dangerous in a sentence

British Dictionary definitions for dangerous

dangerous

/ (ˈdeɪndʒərəs) /


adjective
  1. causing danger; perilous

Derived forms of dangerous

  • dangerously, adverb
  • dangerousness, 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

Other Idioms and Phrases with dangerous

dangerous

see little knowledge is a dangerous thing; live dangerously.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.