adj. 25B6; adjective DANGEROUS, fraught with danger, hazardous, risky, unsafe, treacherous; precarious, vulnerable, uncertain, insecure, exposed, at risk, in jeopardy, in danger, touch-and-go; informal dicey.
safe.
PERILOUS
Meaning of PERILOUS in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012