English Reference
adjective · noun

imperfect

adj. · n.
US /ˌɪmˈpɝfɪkt/ UK /ɪmpˈɜːfɛkt/ im·per·fect UK spelling imperfects

  1. 01 B1 Intermediate

    adj.having some faults, mistakes, or parts that are not quite right.

    adj.not perfect; having flaws, defects, or deficiencies.

    Simple

    The vase was cheaper because it was imperfect and had a small crack.

    In context

    Even an imperfect plan is often better than no plan at all when a crisis requires immediate and decisive action.

  2. 02 B2 Upper Intermediate Technical

    adj.describing a verb tense for an action in the past that was not finished or happened many times.

    adj.denoting a tense of verbs used to describe a past action that is incomplete, continuous, or habitual.

    Simple

    In the sentence 'I was walking', the verb is in the imperfect tense.

    In context

    The student struggled to distinguish between the preterite and the imperfect when narrating stories in Spanish.

    Usage

    Usually placed before the noun 'tense' or 'aspect'.

    perfectperfective
  3. 03 C2 Proficiency Technical Science

    adj.describing a flower that has only male parts or only female parts, but not both.

    adj.having either stamens or pistils, but not both; unisexual.

    Simple

    Corn plants have imperfect flowers because the male and female parts are separate.

    In context

    The botanist explained that imperfect flowers require cross-pollination to produce seeds effectively.

    unisexual
  4. 04 B2 Upper Intermediate

    n.an object that has a small mistake or flaw, often sold at a lower price.

    n.an item, typically a manufactured good, that possesses a minor flaw or defect.

    Simple

    The factory shop sells imperfects at a fifty percent discount.

    In context

    The quality control team sorted the garments into first-quality items and imperfects destined for the outlet store.

  5. 05 C1 Advanced Technical

    n.the name of the verb tense used for unfinished past actions.

    n.the imperfect tense or aspect itself.

    Simple

    The teacher asked the class to conjugate the verb in the imperfect.

    In context

    The use of the imperfect in this poem creates a sense of nostalgia by focusing on ongoing past states rather than completed events.


From Middle English imperfit, from Old French imparfit (modern French imparfait), from Latin imperfectus. Spelling modified 15c. to conform Latin etymology. See im- + perfect.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin imperfectus
Level B1 · Intermediate
Frequency Frequent
Updated