What does chubby mean?
Chubby is an informal English adjective describing someone—or part of their body—as pleasantly plump and rounded. Unlike blunter terms for fatness, chubby carries an affectionate, endearing tone, which is why it attaches so naturally to babies, toddlers, family pets, and features like cheeks, fingers, and knees. A child with chubby cheeks is universally read as healthy and adorable rather than overweight, and even when applied to adults the word stays gentle, suggesting only slight plumpness. The term derives from the chub, a stout, round-bodied freshwater fish, combined with the suffix -y, and has been in use since at least the early seventeenth century. Its common derivatives include chubbiness, chubbier, and chubbiest. Useful in everyday speech and children's literature alike, chubby occupies a distinctive niche: it acknowledges roundness while wrapping it in warmth.
adjective(Of a person or part of the body) pleasantly plump and rounded; slightly fat in an attractive or endearing way.
- (Of a person or body part) plump and rounded in an appealing or endearing way.
- (Extended use, of things) pleasantly thick or rounded in shape.
"The baby's chubby hands reached for the rattle."
"She pinched her nephew's chubby cheeks and told him he'd grown."
"The chubby little sparrows puffed up against the cold."
Chubby comes straight from the chub — a fat, round river fish — making it one of the few English adjectives named after something you'd catch on a fishing line.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of chubby
Chubby derives from chub, the name of a thickset European freshwater fish, with the suffix -y forming an adjective meaning 'like a chub', i.e. plump and rounded. The word has been in English use since at least the early seventeenth century. The ultimate origin of chub itself is uncertain, so no deeper root can be stated with confidence; the fish name is essentially unique to English among major languages.
Related word forms
How chubby is actually used
Chubby is informal to neutral in register and carries a mild, affectionate connotation — it softens what might otherwise be a blunt comment about weight. It is typically used of babies, children, and pets, where it is warmly positive, and can be applied affectionately to adults, though care is needed since comments on anyone's weight may be unwelcome. It generally implies only slight plumpness, not obesity.
Easily confused with chubby
Despite the similar sound, 'chuffed' is British informal slang meaning pleased or delighted, while 'chubby' describes a plump, rounded appearance.