The phrase "coined phrase" refers to a newly invented or created term, which may not have any antonyms in the traditional sense. However, some potential opposite meanings of the term could be "familiar phrase," "standard expression," or "time-honored saying." These phrases refer to commonly used language that has been passed down through generations or is simply well-established within a particular culture or community. In contrast, a "coined phrase" is often used to describe language that is unique or innovative, perhaps even specifically created for a particular purpose or context. While there may not be traditional antonyms for "coined phrase," there are certainly other terms that represent a different type of language use or convention.