- perilous
- Synonyms and related words:alarming, bad, chancy, critical, dangerous, dangersome, delicate, desultory, explosive, fraught with danger, hairy, hazardous, infirm, insecure, insubstantial, jeopardous, menacing, parlous, periculous, precarious, provisional, risky, serious, shaky, shifting, shifty, slippery, susceptible, temporary, tentative, threatening, ticklish, tottery, touchy, treacherous, ugly, uncertain, undependable, unfaithworthy, unhealthy, unreliable, unsafe, unsolid, unsound, unstable, unsteadfast, unsteady, unsubstantial, unsure, untrustworthy, vulnerable, wicked
Moby Thesaurus. Grady Ward. 1996.