The opposite or antonym of an "accepted apology" is essentially a situation where an apology is not accepted or rejected. If someone does not accept the apology, the relationship between the apologizer and apologee remains strained, and there is no resolution to the issue. Alternatively, if someone rejects the apology, they are essentially saying that the apology is insufficient and not sincere enough. In this case, the apologizer may need to try again and provide a more heartfelt apology. Ultimately, the use of antonyms is a way to illustrate the complex and nuanced nature of interpersonal relationships and how language plays a vital role in communicating intentions, feelings, and emotions.