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

Other Word Forms

• dangerousness noun
• dangerously adverb
• nondangerous adjective
• nondangerously adverb
• nondangerousness noun
• quasi-dangerous adjective
• quasi-dangerously adverb
• semidangerous adjective
• semidangerously adverb
• semidangerousness noun
• undangerous adjective
• undangerously 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

She asked us to change her name, worrying that speaking to foreign media can be dangerous.

From BBC

Each time she received the ball, Carpenter was not afraid to take on Greenwood and provided countless opportunities with her direct approach and dangerous deliveries into the box.

From BBC

Yet time can be a dangerous commodity in politics.

From BBC

But being a political lightning rod in an increasingly fascistic world is a dangerous game, one that many in Oliphant’s industry are losing.

From Salon

Binoculars or a telescope will help if you have them, and unlike with solar eclipses, which are dangerous to view directly, lunar eclipses won't damage your eyes as the Moon's reflected light isn't bright enough.

From BBC

Related Words

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