/ Dictionary / Index I imperfective: Meaning and Definition of Find definitions for: im•per•fec•tive Pronunciation: (im"pur-fek'tiv), [key] — Gram. Gram. —adj. noting an aspect of the verb, as in Russian, that indicates incompleteness of the action or state at a temporal point of reference. —n. the imperfective aspect. a verb in this aspect. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: imperfective (Thesaurus) imperfection imperfect rhyme Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language