buff up

phrasal verb
buffed up; buffing up; buffs up

Definition of buff 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
Buying Guide

Our Reviews team has selected the best dumbbells.

Learn More About buff up

Dictionary Entries Near buff up

buff top

buff up

buffy

See More Nearby Entries 

Statistics for buff up

Cite this Entry

“Buff up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buff%20up. Accessed 30 Jun. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Great Words for Scrabble

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!