hyperbole
A figure of speech that uses extreme exaggeration for emphasis or effect, not meant to be taken literally. Common in literature, speeches, and everyday conversation.
"I'm so tired I could die" is an example of hyperbole.
His stories always have too much hyperbole.
Compound of 誇張 (exaggeration) + 法 (method, rule). The term is a direct translation of the Western rhetorical concept 'hyperbole'.