Improve
Improve verb - To make better.
Usage example: a little salt would improve this bland food
Lessen
Lessen verb - To lower in character, dignity, or quality.
Usage example: blatant hypocrisy that lessened him in the eyes of the voters
Common collocations
Cite this Source
Lessen and Improve. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/improve/lessen
Improve & Lessen. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/improve/lessen>.
Lessen or Improve. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/improve/lessen.
Google Ngram Viewer shows how "improve" and "lessen" have occurred on timeline