high-risk Synonyms

risky speculative major threat dicey touch-and-go chancy defenceless dodgy riskiest riskier unprotected worst in danger unpredictable significant threat substantial risk major risk great danger greatest risk serious risk big risk huge risk great risk easily affected by unsafe worse vulnerable insecure helpless hazardous hairy gnarly extreme exposed endangered dangerous breakneck parlous perilous venturesome unsound unchancy uncertain tricky treacherous threatening sticky risking precarious bad