pack on

verb

To add (fat, muscle, etc.) so as to increase mass or bulk.

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Meanings

verbpack on (third-person singular simple present packs on, present participle packing on, simple past and past participle packed on)

present singular third person packs on · participle present packing on · participle past packed on · past packed on

  1. informaltransitiveTo add (fat, muscle, etc.) so as to increase mass or bulk.

    The nine males packed on so much fat their weight increased to more than 700 grams.

    2010 October 21, Margaret Munro, “Dad's eating habits weigh heavily on offspring: study”, in Vancouver Sun, Canada, retrieved 13 Nov 2010
    1 more example

    Most strength coaches agree that to gain an inch on your arms, you have to pack on at least 10 pounds of body mass.

    2006, Joel Marion, Men's Fitness, Dec/Jan, p. 102
Cite this entry
APA

pack on. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/pack%20on

MLA

“pack on.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pack%20on. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “pack on,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/pack%20on.

Source: pack on on Wiktionary, CC BY-SA 4.0.