The phrase "kissed and make up" is a common idiom that refers to the act of reconciling after a disagreement or argument. Antonyms for this expression might include words such as ignore, avoid, feud, or quarrel. When two parties refuse to reconcile, they might choose to ignore each other, avoid each other's company, or continue to spark conflict and feud. Rather than "kissing and making up," they may choose to hold a grudge and continue down a path of hostility. While it's always preferable to find common ground and move forward, sometimes it's just not possible.