Synonyms of perilous

2 Syllables

parlous, touchy, hairy, chancy, rugged, loaded, riskier, doomful, shaky, wicked, risky, rootless, unsound, dicey, ticklish, dickens

3 Syllables

hazardous, unstable, jeopardous, treacherous, touch-and-go, unsure, ominous, unsettled, unshielded, mischievous, rascally, insidious, dangerous, unsteady, slippery, unsafe, fulminant, unhealthy, precarious, threatening, uncertain, exposed

4 Syllables

malificent, dangersome, dynamite, explosive, ill-behaved, insecure, vulnerable, delicate, impugnable, precursive, eruptive

5 Syllables

detonative, premonitory