dangerous Synonyms

serious grave unsafe injurious severe destructive threatening life-threatening menacing fatal high-risk hazardous lethal grievous harmful uncertain damaging critical treacherous ominous poisonous perilous unpredictable risky deadly precarious risk toxicant toxicological transmissible transmissive rogue ugly unbacked rickety unchancy toxic tigerish self-destructive semibarbarian scathless scary peril sharp slaughterous slippy sanguineous ruinous syndetic threatened