Beef up and Undermine

Opposite meaning terms

Beef up verb - To increase the ability of (as a muscle) to exert physical force.

Usage example: beefed up the walls with iron bars

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Undermine is an antonym for beef up.

Undermine verb - Destroy property or hinder normal operations.

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Beef up is an antonym for undermine.

Nearby Word: undermining

Cite this Source

Undermine and Beef up. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/beef_up/undermine

Beef up & Undermine. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/beef_up/undermine>.

Undermine or Beef up. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/beef_up/undermine.

Google Ngram Viewer shows how "beef up" and "undermine" have occurred on timeline