Impair
Impair verb - To reduce the soundness, effectiveness, or perfection of.
Usage example: already impaired by a crack, the windshield shattered upon impact with the baseball
Nearby Words: impairment, impairing
Improve
Improve verb - To make better.
Usage example: a little salt would improve this bland food
Common collocations
Cite this Source
Improve and Impair. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/impair/improve
Impair & Improve. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/impair/improve>.
Improve or Impair. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/impair/improve.
Google Ngram Viewer shows how "impair" and "improve" have occurred on timeline