Imperfective definition

Of, relating to, or being the aspect that expresses the action denoted by the verb without regard to its beginning or completion.

The imperfective aspect.

An imperfective verb form.

A verb having an imperfective form.

(gram.) Designating or of an aspect of verbs, as in Russian, expressing continuing or incomplete action or making no reference to completion.

The imperfective aspect.

A verb in this aspect.

Of or relating to the imperfective aspect.