Other forms: chubbiest; chubbier; chubbily
Someone who's chubby is plump or slightly overweight. If the vet mentions that your cat's getting a little chubby, you might need to cut down on the cat treats.
Many toddlers and young children have round, chubby cheeks, puppies have chubby little bellies, and Santa Claus is perhaps the most famously chubby mythical figure. The word chubby dates from the early 17th century, when it literally meant "looks like a chub," a somewhat round-shaped river fish. There may also be a connection to the Old Norse kumben, "stumpy."