Buck up and Slow down

Buck up

Buck up verb - To become glad or hopeful.

Slow down is an antonym for buck up.

Slow down

Slow down verb - Lose velocity; move more slowly.

Buck up is an antonym for slow down.
Cite this Source
Slow down and Buck up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/buck_up/slow_down
Buck up & Slow down. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/buck_up/slow_down>.
Slow down or Buck up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/buck_up/slow_down.
Google Ngram Viewer shows how "buck up" and "slow down" have occurred on timeline