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impedor
impel
impeller
impend
impending
impenetrable
impenitent
imperative
imperator
imperceptible
imperceptive
imperf.
imperfect
imperfect competition
imperfect fungus
imperfection
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imperil

im·per·il [ im pérrəl ] (past and past participle im·per·iled, present participle im·per·il·ing, 3rd person present singular im·per·ils)


transitive verb 
Definition:
 
endanger: to put something or somebody in danger


im·per·il·ment noun
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