buff up
phrasal 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-upbuffed-up bodies
Examples of buff up in a Sentence
Recent Examples on the Web
Fast food restaurants from Starbucks to Subway have buffed up their menus with protein cold foam and protein bowls.
—
Katherine Fung, MSNBC Newsweek, 2 Oct. 2025
Wu is now moving to buff up her image by having total control of what the media writes about Boston.
—Joe Battenfeld, Boston Herald, 25 Sep. 2025
The quests in the other two books are there to give players more gold and magic items to buff up their characters.
—Rob Wieland, Forbes.com, 10 Sep. 2025
Also buffed up are Michelangelo’s Pietà, Bernini’s Fountain of the Four Rivers in Piazza Navona and Bernini’s angels on the Ponte Sant’Angelo.
—Cecilia Rodriguez, Forbes, 27 Dec. 2024
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Katherine Fung, MSNBC Newsweek, 2 Oct. 2025
Wu is now moving to buff up her image by having total control of what the media writes about Boston.
—Joe Battenfeld, Boston Herald, 25 Sep. 2025
The quests in the other two books are there to give players more gold and magic items to buff up their characters.
—Rob Wieland, Forbes.com, 10 Sep. 2025
Also buffed up are Michelangelo’s Pietà, Bernini’s Fountain of the Four Rivers in Piazza Navona and Bernini’s angels on the Ponte Sant’Angelo.
—Cecilia Rodriguez, Forbes, 27 Dec. 2024
Cite this Entry
“Buff up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buff%20up. Accessed 3 Nov. 2025.
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