IMPERIL
endanger, jeopardize, jeopardise, menace, threaten, imperil, peril
(verb) pose a threat to; present a danger to; “The pollution is endangering the crops”
Source: WordNet® 3.1
Etymology
Verb
imperil (third-person singular simple present imperils, present participle (US) imperiling or (UK) imperilling, simple past and past participle (US) imperiled or (UK) imperilled)
(transitive) To put into peril; to place in danger.
(transitive) To risk or hazard.
Synonyms
• (put into peril): endanger
Anagrams
• implier
Source: Wiktionary
Im*per"il, v. t. [imp. & p. p. Imperiled or Imperilled; p. pr. & vb.
n. Imperiling or Imperilling.]
Definition: To bring into peril; to endanger.
Source: Webster’s Unabridged Dictionary 1913 Edition