perilous Synonyms

parlous precarious touch-and-go uncertain ugly tricky treacherous touchy ticklish threatening shaky serious scary risky unreliable unsound unpredictable iffy dicey chancy life-threatening dodgy high-risk unprotected unhealthy wicked vulnerable unstable unsafe periculous ominous existential exceptive endangered disturbing dire difficult delicate deadly dangerous danger critical awkward explosive exposed nocuous minacious menacing lethal jeopardous