A cliché is an overused expression or idea that has lost its originality and impact due to frequent repetition. Common examples include phrases like "time heals all wounds" or "think outside the box." Clichés can be found in literature, everyday conversation, and various forms of media, often making communication feel less engaging. While clichés can sometimes convey a general truth, they may also hinder effective communication by sounding unoriginal or insincere. Writers and speakers are often encouraged to avoid clichés in favor of more unique and specific language to better express their thoughts and connect with their audience.