a statement or description that makes something seem larger, better, worse, or more important than it really is; the act of making a statement like this a slight/gross/wild exaggeration It would be an exaggeration to say I knew her well—I only met her twice. It's no exaggeration to say that most students have never read a complete Shakespeare play. He told his story simply and without exaggeration.
See exaggeration in the Oxford Advanced Learner's Dictionary