transitive verbim·per·iled, im·per·il·ing, im·per·ils or im·per·illed or im·per·il·ling
(third-person singular simple present imperils, present participle imperilling, simple past and past participle imperilled) (UK) imperil (third-person singular simple present imperils, present participle imperiling, simple past and past participle imperiled) (US)
- To put into peril; to place in danger or cause a hazard.
- "Boating and fishing groups contend that the 130 [wind energy] towers would be a navigation hazard and offshore construction would imperil the fisheries." — "Wind Out of Their Sails", Jeffrey Winters, p. 31, Mechanical Engineering, June 2006
- To risk.