bulk up

verb

bulked up; bulking up; bulks up

intransitive verb

: to gain weight especially by becoming more muscular

transitive verb

: to cause to bulk up

Examples of bulk up in a Sentence

she bulked up her hair with one hand as she reached for the shears with the other
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The fiber slows digestion and bulks up stool, helping manage constipation. Amber J. Tresca, Verywell Health, 16 May 2026 Gadd achieved his goals with the help of a nutritionist and personal trainer, but didn’t want to bulk up too much. Savannah Walsh, Vanity Fair, 14 May 2026 Paige Bueckers is bulking up The reigning WNBA Rookie of the Year has reportedly put on 15 lbs. Anna Lazarus Caplan, PEOPLE, 13 May 2026 But as a former high school linebacker who bulked up in college from 220 pounds to his current weight of 310, van den Berg exhibits good vision and a strong feel for the game. Dan Wiederer, New York Times, 11 May 2026 See All Example Sentences for bulk up

Word History

First Known Use

1979, in the meaning defined at intransitive sense

Time Traveler
The first known use of bulk up was in 1979

Browse Nearby Words

Cite this Entry

“Bulk up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bulk%20up. Accessed 20 May. 2026.

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