Cliché is an expression, idea, or element of an artistic work which has become overused to the point of losing it's original meaning, effect, and even to the point of being trite or irritating, especially when at some earlier time it was considered meaningful or novel.
The term is frequently used in modern culture for an action or idea that is expected or predictable, based on a prior event. Typically pejorative, clichés are not always false or inaccurate; a cliché may or may not be true.
You probably knew most of this, but what you probably didn’t know is that the word is an onomatopoeia! Representing the sound of a printing press.Just try not to go around bragging about it's origin, or it might soon become very cliché.