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Of, relating to, or being the aspect that expresses the action denoted by the verb without regard to its beginning or completion.
1. The imperfective aspect.
2. An imperfective verb form.
3. A verb having an imperfective form.
(Grammar) denoting an aspect of the verb in some languages, including English, used to indicate that the action is in progress without regard to its completion. Compare perfective
a. the imperfective aspect of a verb
b. a verb in this aspect
im•per•fec•tive(ˌɪm pərˈfɛk tɪv)
1. of or noting an aspect of the verb that indicates incompleteness or repetition of an action or state.n.
2. the imperfective aspect.
3. a verb in this aspect.