Buff up
Brush
Brush verb - To move or proceed smoothly and readily.
Cite this Source
Brush and Buff up. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/buff_up/brush
Buff up & Brush. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/buff_up/brush>.
Brush or Buff up. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/buff_up/brush.
Google Ngram Viewer shows how "buff up" and "brush" have occurred on timeline