1 C1 idiomatic slang
(Internet slang) To gain weight and become noticeably fatter, especially said affectionately about an animal.
"Look at this cat — he really chonked up over the winter months!"
inseparable
chonk up
C1 slang transitive/intransitive
Internet slang meaning to become noticeably fatter or chubbier, usually said affectionately of an animal or person.
In plain English
To get bigger and fatter — used in a cute or funny way, usually about pets.
What does "chonk up" mean?
One main meaning — here's how to use it.
Usage tip
Very recent internet slang originating in online communities (particularly around cat content). 'Chonk' itself is internet slang for a fat animal (especially a cat). Not used in formal or even standard informal speech. May fade from use as internet slang cycles change. ESL learners may encounter it in online contexts.
Words that pair with "chonk up"
Natural word combinations native speakers use most often.
cat pet kitten puppy winter food
How to conjugate "chonk up"
The five tense forms you'll use most often.
Base
chonk up
I/you/we/they
3rd person
chonks up
he/she/it
Past simple
chonked up
yesterday
Past participle
chonked up
have + pp
-ing form
chonking up
continuous
Hear "chonk up" in the wild
Listen to native speakers using "chonk up" in real YouTube videos — click a clip to watch it on Looplines.
Other ways to say "chonk up"
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