Rounded and plump. See Synonyms at fat. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "chubby" in a sentence
"They use the word 'chubby' -- who are they referring to?"
"“Or the shortest kid that people call ‘Stretch,’ or you call the chubby guy ‘Slim,’ or—”"
"Growing up I was called chubby or “big-boned” by adults."