buff up

verb

buffed up; buffing up; buffs up

: to become stronger and more muscular or to make (someone or something) stronger and more muscular through exercising and weight lifting

She is buffing up for her role as a female boxer.

He buffed himself up by going to the gym every day.

—often used as buffed-up

buffed-up bodies

Examples of buff up in a Sentence

Recent Examples on the Web

Dire forecasts attract attention and buff up the forecasters’ brands. — George Calhoun, Forbes.com, 18 June 2026

Burger King is buffing up the Whopper for the first time in a decade. — Mike Snider, USA Today, 26 Feb. 2026

Ohio State has buffed up its interior line with Smith and the edge with Russaw. — Cameron Teague Robinson, New York Times, 13 Jan. 2026

Like the yeoman boys are out in the barn, half-naked, working out, buffing up and wearing animal heads and preparing for some kind of an inchoate battle with the burghers. — Literary Hub, 13 Nov. 2025

Rhymes for buff up

• backup
• blowup
• breakup
• buildup
• checkup
• cleanup
• holdup
• hookup
• lineup
• lockup
• makeup
• markup