dangerous

[ deyn-jer-uhs, deynj-ruhs ]

adjective

1. full of danger danger or risk; causing danger; danger; perilous; risky; hazardous; unsafe.
2. able or likely to cause physical injury:

   a dangerous criminal.

dangerous

/ ˈdeɪndʒərəs /

adjective

1. causing danger; perilous

Derived Forms

• ˈdangerousness, noun
• ˈdangerously, adverb

Other Words From

• 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

Word History and Origins

Origin of dangerous¹

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

Idioms and Phrases

see little knowledge is a dangerous thing ; live dangerously .

Example Sentences

“We have horrible, disgusting, dangerous, filthy encampments of junkies and homeless people living in places that our children used to play Little League baseball, which they don’t get to play very much anymore, do they?”

From Los Angeles Times

The Ukranian leader said it would be "very dangerous if we lose unity in Europe, and what is most important is unity between Ukraine and the United States".

From BBC

But that dangerous feeling of exposure is the central preoccupation of the new drama “Queer,” and it can’t be explored without a lead actor who is similarly willing to offer himself up.

From New York Times

The UK Health Security Agency also issued the first amber cold weather health alert of the season, warning conditions could be dangerous for elderly and vulnerable people.

From BBC

The Home Office said the scheme had taken dangerous weapons "off our streets" and that compensation claims had "undergone stringent review".

From BBC

Related Words

• alarming
• bad
• critical
• deadly
• fatal
• nasty
• perilous
• precarious
• risky
• serious
• terrible
• threatening
• treacherous
• ugly
• unhealthy
• unsafe
• unstable