1 having a fault: This coat is being sold at half-price because it is imperfect.
az: qüsurlu
ru: дефектный
2 (also noun) (linguistics) (a verb) of the tense expressing an action or state in the past which is not completed: The verb 'go' in 'I was going' is in the imperfect tense.
az: tamamlanmamış
ru: имперфект(ный)