Beef up and Impair

Beef up

Beef up verb - To increase the ability of (as a muscle) to exert physical force.
Usage example: beefed up the walls with iron bars

Impair is an antonym for beef up.

Impair

Impair verb - To reduce the soundness, effectiveness, or perfection of.

Beef up is an antonym for impair.

Nearby Words: impairment, impairing
Cite this Source
Impair and Beef up. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/beef_up/impair
Beef up & Impair. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/beef_up/impair>.
Impair or Beef up. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/beef_up/impair.
Google Ngram Viewer shows how "beef up" and "impair" have occurred on timeline