chonk up

Meanings

verbchonk up (third-person singular simple present chonks up, present participle chonking up, simple past and past participle chonked up)

present singular third person chonks up · participle present chonking up · participle past chonked up · past chonked up

InternetespeciallyintransitiveTo become fat or large, especially from overeating or overfeeding.
Sebastian chonking up finally after two years.
2025 July 29, Aggravating-Can-945, r/britishshorthair, Reddit, archived from the original on 31 Jul 2025
5 more examples
My buddy has chonked up in the year and a half I’ve been feeding him.
2023 February 27, daffodil0127, r/Feral_Cats, Reddit, archived from the original on 01 Dec 2024
No more free feeding for either of them, which is good because the void was also starting to chonk up.
2024 June 20, kmrikkari, r/dechonkers, Reddit, archived from the original on 01 Apr 2025
Even still, I worry she's starting to chonk up.
2024 July 19, corgisfirst, r/dechonkers, Reddit, archived from the original on 30 Mar 2025
Some get chonkier after a while. I've seen bshs [British Shorthairs] who chonk up after they hit 1y, and some that need to hit 4y to reach the ultimate chonkiness level.
2024 November 11, nyatsomi, r/britishshorthair, Reddit, archived from the original on 30 Mar 2025
I'm curious to hear how he sounds when he chonks up for the winter 🤣
2025 August 10, ItsAllOneBigNote, r/catstairs, Reddit, archived from the original on 16 Dec 2025
InternetespeciallytransitiveTo make fat or large, especially by overfeeding.
My neighbor has been chonking up her cat.

Also see

Cite this entry

APA

chonk up. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/chonk%20up

MLA

“chonk up.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/chonk%20up. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “chonk up,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/chonk%20up.

Source: chonk up on Wiktionary, CC BY-SA 4.0.