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definitions

imperfective

[im-per-fek-tiv]Grammar
adjective
  1. noting an aspect of the verb, as in Russian, that indicates incompleteness of the action or state at a temporal point of reference.
noun
  1. the imperfective aspect.
  2. a verb in this aspect.

Origin of imperfective

First recorded in 1670–80; imperfect + -ive
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for imperfective

imperfective

adjective
  1. denoting an aspect of the verb in some languages, including English, used to indicate that the action is in progress without regard to its completionCompare perfective
noun
    1. the imperfective aspect of a verb
    2. a verb in this aspect
Derived Formsimperfectively, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012