Buck up
Buck up verb - To fill with courage or strength of purpose.
Usage example: a surprise presidential visit to buck up the troops
Mutual synonyms
Cite this Source
Boost and Buck up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/buck_up/boost
Buck up & Boost. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/buck_up/boost>.
Boost or Buck up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/buck_up/boost.
Google Ngram Viewer shows how "buck up" and "boost" have occurred on timeline