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.
Martin's moving life story made an impact on Sweeney, who bulked up for the film by gaining about 30 pounds and training three times a day for three months before production. Edward Segarra, USA Today, 30 Oct. 2025 Cavanagh downplayed the need for NBCUniversal to bulk up with more assets after the Versant spinoff. Cynthia Littleton, Variety, 30 Oct. 2025 Cooling the missile during flight could require bulking up its reactor to accommodate boreholes for airflow. Dan Vergano, Scientific American, 28 Oct. 2025 In a 2021 study of more than 4,000 American teenage boys, 11 percent had used muscle-building supplements, including anabolic steroids, to bulk up. Yasmin Tayag, The Atlantic, 17 Oct. 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 9 Nov. 2025.

Last Updated: - Updated example sentences
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