Perilous — synonyms, definition

1. perilous (a)

absurd awkward chancy close clouded critical dangerous dire doubtful dubious endangered fearful foolish gloomy grim hazardous mad narrow near nonsensical • • •

2. perilous (US)

dangerous endangered exposed precarious unarmed undefended unsheltered vulnerable

3. perilous (Adjective)

parlous touch-and-go

perilous (Adjective) — Fraught with danger. ex. "a perilous voyage across the Atlantic in a small boat"