high-risk Synonyms

risky speculative major threat touch-and-go chancy defenceless dodgy riskiest riskier unprotected worst worse dicey 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 vulnerable venturesome hazardous hairy gnarly extreme exposed endangered deadly dangerous breakneck bad helpless insecure parlous unsound unchancy uncertain tricky treacherous threatening sticky risking precarious