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Adjective perilous has 1 sense
- parlous, perilous, precarious, touch-and-go - fraught with danger; "dangerous waters"; "a parlous journey on stormy seas"; "a perilous voyage across the Atlantic in a small boat"; "the precarious life of an undersea diver"; "dangerous surgery followed by a touch-and-go recovery"
Antonym: safe (indirect, via dangerous)
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