Synonyms of the word

dangerous

• adj. Full of danger.
• adj. Causing danger; ready to do harm or injury.
• adj. (colloquial, dated) In a condition of danger, as from illness; threatened with death.
• adj. (obsolete) Hard to suit; difficult to please.
• adj. (obsolete) Reserved; not affable.

breakneck

• adj. Dangerously fast; hell-for-leather.
• n. A fall that breaks the neck.
• n. A dangerous steep place from which one could fall.

chanceful

• adj. (obsolete) hazardous.

chancy

• adj. uncertain, risky, hazardous.
• adj. subject to chance; random.

critical

• adj. Inclined to find fault or criticize; fastidious; captious; censorious; exacting.
• adj. Pertaining to, or indicating, a crisis or turning point.
• adj. Extremely important.
• adj. Relating to criticism or careful analysis, such as literary or film criticism.
• adj. (medicine) Of a patient condition involving unstable vital signs and a prognosis that predicts the condition…
• adj. Likely to go out of control if disturbed, that is, opposite of stable.
• adj. Of the point (in temperature, reagent concentration etc.) where a nuclear or chemical reaction becomes…
• n. A critical value, factor, etc.
• n. In breakdancing, a kind of airflare move in which the dancer hops from one hand to the other.

desperate

• adj. Being filled with, or in a state of despair; hopeless.
• adj. Without regard to danger or safety; reckless; furious.
• adj. Beyond hope; causing despair; extremely perilous; irretrievable.
• adj. Extreme, in a bad sense; outrageous.
• adj. Extremely intense.
• adj. In need of something very much.

dicey

• adj. Fraught with danger.
• adj. Of uncertain, risky outcome.
• adj. Of doubtful or uncertain efficacy, provenance, etc.; dodgy.
• adj. (slang) Nauseating, rank.

dodgy

• adj. (Britain, Australia, New Zealand) evasive and shifty.
• adj. (Britain, Australia, New Zealand) unsound and unreliable.
• adj. dishonest.
• adj. risky.
• adj. deviant.
• adj. uncomfortable and weird.

grave

• n. An excavation in the earth as a place of burial.
• n. Any place of interment; a tomb; a sepulcher.
• n. death, destruction.
• v. (transitive, obsolete) To dig.
• v. (transitive, obsolete) To carve or cut, as letters or figures, on some hard substance; to engrave.
• v. (transitive, obsolete) To carve out or give shape to, by cutting with a chisel; to sculpture.
• v. (transitive, obsolete) To impress deeply (on the mind); to fix indelibly.
• v. (transitive, obsolete) To entomb; to bury.
• v. (transitive, obsolete, nautical) To clean, as a vessel's bottom, of barnacles, grass, etc., and pay it…
• v. (intransitive, obsolete) To write or delineate on hard substances, by means of incised lines; to practice…
• adj. (obsolete) Influential, important; authoritative.
• adj. Characterised by a dignified sense of seriousness; not cheerful, sombre.
• adj. Low in pitch, tone etc.
• adj. Serious, in a negative sense; important, formidable.
• n. A written accent used in French, Italian, and other languages. è is an e with a grave accent.

grievous

• adj. Causing grief, pain or sorrow.
• adj. Serious, grave, dire or dangerous.

harmful

• adj. of a kind likely to be damaging; injurious.

hazardous

• adj. Risky, dangerous, with the nature of a hazard.
• adj. Exposing to loss or evil.
• adj. Of or involving chance.

insecure

• adj. Not secure.
• adj. Not comfortable or confident in oneself or in certain situations.

insidious

• adj. Producing harm in a stealthy, often gradual, manner.
• adj. Intending to entrap; alluring but harmful.
• adj. (nonstandard) Treacherous.

life-threatening

• adj. Endangering the continued life of the subject.

mordacious

• adj. Biting, causing a physical bite or sting; corrosive.
• adj. sharp or caustic in style or tone.
• adj. Prone to biting, aggressive (of an animal etc.).
• adj. Sharp in intent, sarcastic.

parlous

• adj. Attended with peril; dangerous; risky.
• adj. Dire, terrible, appalling.
• adj. (obsolete) Dangerously clever or cunning.
• adv. (archaic) Very, extremely.

perilous

• adj. Dangerous, full of peril.

precarious

• adj. (comparable) Dangerously insecure or unstable; perilous.
• adj. (law) Depending on the intention of another.
• adj. (dentistry) Relating to incipient caries.

risky

• adj. Dangerous, involving risks.

self-destructive

• adj. That causes injury to oneself or harm to one's interests.

serious

• adj. Without humor or expression of happiness; grave in manner or disposition; earnest; solemn.
• adj. Important; weighty; not insignificant.
• adj. Really intending what is said; in earnest; not jocular or deceiving.

severe

• adj. Very bad or intense.
• adj. Strict or harsh.
• adj. Sober, plain in appearance, austere.

suicidal

• adj. Pertaining to suicide.
• adj. (of a person) Likely to commit, or to attempt to commit, suicide.
• adj. (informal) Extremely reckless.
• n. someone suicidal, someone likely to kill themselves.

touch-and-go

• adj. Alternative form of touch and go.
• n. (aviation) A landing on a runway immediately followed by a takeoff without an intervening full stop.

treacherous

• adj. Exhibiting treachery.
• adj. Deceitful; inclined to betray.
• adj. Unreliable; dangerous.

unreliable

• adj. Not reliable.

unsafe

• adj. Not safe; dangerous.

vulnerable

• adj. More or most likely to be exposed to the chance of being attacked or harmed, either physically or emotionally.
• adj. (computing) More likely to be exposed to malicious programs or viruses.

wild

• adj. Untamed; not domesticated.
• adj. Unrestrained or uninhibited.
• adj. Raucous, unruly, or licentious.
• adj. Visibly and overtly anxious; frantic.
• adj. Disheveled, tangled, or untidy.
• adj. Enthusiastic.
• adj. Inaccurate.
• adj. Exposed to the wind and sea; unsheltered.
• adj. (nautical) Hard to steer; said of a vessel.
• adj. (mathematics, of a knot) Not capable of being represented as a finite closed polygonal chain.
• adv. Inaccurately; not on target.
• n. The undomesticated state of a wild animal.
• n. (chiefly in the plural) a wilderness.
• v. (intransitive, slang) To commit random acts of assault, robbery, and rape in an urban setting, especially…