Exaggeration is the representation of something as more extreme or dramatic than it really is. Exaggeration may occur intentionally or unintentionally. The exaggerator has been a familiar figure in Western culture since at least Aristotle's discussion of the alazon: 'the boaster is regarded as one who pretends to have distinguished qualities which he possesses either not at all or to a lesser degree than he pretends...exaggerating'.
It is the opposite of minimisation.
Words or expressions associated with exaggeration include: