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.
In the wake of the prolonged downturn in the property market, Chinese households have bulked up their deposit savings—on the order of nearly seven percentage points of GDP compared to the their average levels in the 2010s. Jan Mischke, Fortune, 31 Dec. 2025 The 6-3 Sadiq came to Eugene two years ago at 220 pounds, but bulked up to 245. Eddie Brown, San Diego Union-Tribune, 31 Dec. 2025 Meanwhile, insoluble fiber bulks up your stool and keeps you regular, Schiff says. Kirsten Nunez, Martha Stewart, 30 Dec. 2025 Large white sharks, which can reach nearly 21 feet in length, migrate from offshore in the Pacific to the coast in October to bulk up on seals and sea lions, typically remaining through January. Ethan Baron, Mercury News, 24 Dec. 2025 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 2 Jan. 2026.

Last Updated: - Updated example sentences
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