Synonyms for (adjective) dangerous

Synonyms: dangerous, grave, grievous, life-threatening, serious, severe

Definition: causing fear or anxiety by threatening great harm

Usage: a dangerous operation; a grave situation; a grave illness; grievous bodily harm; a serious wound; a serious turn of events; a severe case of pneumonia; a life-threatening disease

Similar words: critical

Definition: being in or verging on a state of crisis or emergency

Usage: a critical shortage of food; a critical illness; an illness at the critical stage


Synonyms: dangerous, unsafe

Definition: involving or causing danger or risk; liable to hurt or harm

Usage: a dangerous criminal; a dangerous bridge; unemployment reached dangerous proportions

Similar words: breakneck

Definition: moving at very high speed

Usage: a breakneck pace


Similar words: chanceful, chancy, dodgy, dicey

Definition: of uncertain outcome; especially fraught with risk

Usage: an extremely dicey future on a brave new world of liquid nitrogen, tar, and smog- New Yorker


Similar words: desperate

Definition: (of persons) dangerously reckless or violent as from urgency or despair

Usage: a desperate criminal; taken hostage of desperate men


Similar words: wild, risky, hazardous

Definition: involving risk or danger

Usage: skydiving is a hazardous sport; extremely risky going out in the tide and fog; a wild financial scheme


Similar words: insidious

Definition: intended to entrap


Similar words: mordacious

Definition: biting or given to biting

Usage: they deliberately gave me a skittish and mordacious mount


Similar words: on the hook

Definition: caught in a difficult or dangerous situation

Usage: there I was back on the hook


Similar words: perilous, parlous, precarious, touch-and-go

Definition: fraught with danger

Usage: dangerous waters; a parlous journey on stormy seas; a perilous voyage across the Atlantic in a small boat; the precarious life of an undersea diver; dangerous surgery followed by a touch-and-go recovery


Similar words: suicidal, self-destructive

Definition: dangerous to yourself or your interests

Usage: suicidal impulses; a suicidal corporate takeover strategy; a kamikaze pilot


Similar words: treacherous, unreliable

Definition: dangerously unstable and unpredictable

Usage: treacherous winding roads; an unreliable trestle