English

Definition of perilous adjective from the Oxford Advanced Learner's Dictionary

 

perilous

 adjective
adjective
BrE BrE//ˈperələs//
 
; NAmE NAmE//ˈperələs//
 
(formal or literary)
 
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very dangerous synonym hazardous a perilous adventure/journey Word Origin Middle English: from Old French perillous, from Latin periculosus, from periculum ‘danger’, from the base of experiri ‘to try’.
See the Oxford Advanced American Dictionary entry: perilous

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