Meaning of “exaggeration” - Learner’s Dictionary

exaggeration

noun [ C, U ] uk us /ɪɡˌzædʒərˈeɪʃən/

the use of descriptions that say something is larger, better, worse, etc than it really is:

a gross exaggeration of the facts

(Definition of “exaggeration” from the Cambridge Learner’s Dictionary © Cambridge University Press)