Synonyms of perilous in English:

perilous


See definition of perilous

adjective

1‘a perilous journey through the mountains’

SYNONYMS
dangerous, fraught with danger, hazardous, risky, unsafe, treacherous
precarious, vulnerable, uncertain, insecure, critical, desperate, exposed, at risk, in jeopardy, in danger, touch-and-go
problematic, difficult
informal hairy, dicey
North American informal gnarly
archaic, humorous parlous
ANTONYMS

safe, secure