Imperfect
Imperfect adjective - Having a fault.
Lacking is a synonym for imperfect in deficient topic. In some cases you can use "Lacking" instead an adjective "Imperfect", when it comes to topics like not complete.
Nearby Words: imperfection, imperfectly
Mutual synonyms
Related pairs
Both words in one sentence
- Bizarro is an imperfect clone of Superman, but Bizarro may be considered as more of a victim himself as he's lacking in the intelligence department.
Source: Evil Doppelganger -
The Brutes from the same game are actually imperfect clones of him, lacking his speed, intelligence, and ability to demonstrably kill the Boss dead with a single punch if angered.
Source: Stout Strength - The only commonly used subject pronouns are the third person ones, due to the ambiguity lacking a pronoun can sometimes cause, and yo in tenses where the first-person-singular and third-person-singular are identical (i.e., imperfect, conditional, and all subjunctive tenses).
Source: Useful Notes / Spanish Language
Cite this Source
Lacking and Imperfect. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/imperfect/lacking
Imperfect & Lacking. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/imperfect/lacking>.
Lacking or Imperfect. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/imperfect/lacking.
Google Ngram Viewer shows how "imperfect" and "lacking" have occurred on timeline