slightly fat in a way that looks healthy and attractive:
a chubby six-year-old
a baby with round chubby cheeks
WORD CHOICE: WORD CHOICE: fat, overweight, obese, chubby, plump, big, well-builtIn general, people do not like to be called fat. But some ways to say 'fat' are less rude than others.fatis a very direct word. You might use it about yourself but it will usually cause offence if you use it about someone else• I'm so fat at the moment!overweight is a more polite way to say that someone is fatter than they usually are or than they should be• She is a little overweight.obese is a word used especially by doctors to describe people who are very fat, in a way that is bad for their health.chubby is a more informal word and is used especially of children or of rounded body parts such as cheeks or knees.plump means fat and rounded in a pleasant way• a plump, motherly womanbigandwell-builtare fairly polite ways to describe someone with a large, strong, or fat body• For big men like him, air travel can be uncomfortable. ➔ See alsofat
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.