dangerous

I

(Roget's IV) modif.

1. [Not safe]

Syn. perilous, unsafe, hazardous, risky, precarious, treacherous, unprotected, unshielded, unsheltered, critical, serious, vulnerable, exposed, involving risk, full of risk, threatening, alarming, portentous, causing danger, insecure, ticklish, delicate, speculative, unstable, touchy, bad, fraught with danger, thorny, jeopardous, breakneck, chancy, uncertain, touch-and-go, shaky, slippery, unsteady, rickety, rocky, hairy*, unhealthy*, hot*, dicey*; see also endangered , uncertain 2 , unsafe .

Ant. safe, sure, secure.

2. [Involving an active threat]

Syn. menacing, threatening, serious, critical, impending, ominous, ugly, nasty, imminent, malignant, formidable, terrible, impregnable, armed, fatal, mortal, deadly, explosive, out of the frying pan and into the fire*, on a collision course*; see also ominous .

Ant. helpful*, innocent, beneficial.

II

(Roget's 3 Superthesaurus) a.

perilous, threatening, hazardous, unsafe, menacing, jeopardous, risky, precarious, chancy, *touch and go, *ticklish, unhealthy, dire, *hanging over one's head like the sword of Damocles, reaching critical mass, *between Scylla and Charybdis.

ANT.: safe, secure, protected

III

(Roget's Thesaurus II) adjective 1. Involving possible risk, loss, or injury: adventurous, chancy, hazardous, jeopardous, parlous, perilous, risky, treacherous, unsafe, venturesome, venturous. Slang: hairy. See SAFETY. 2. Causing or marked by danger or pain, for example: grave2, grievous, serious, severe. See HELP.