Final answer:
A cliche is an overused expression that lacks originality and creativity.
Step-by-step explanation:
A cliche is an overused expression. It is a phrase or trope that has been used so many times that it has become boring and uncreative. For example, the metaphor of love as a "red rose" has been used so frequently that it has become cliche. Cliches are often considered to lack originality and can be seen as a sign of lazy writing or communication.