Bump heads with is a phrase that means to have a disagreement or a conflict with someone. Antonyms for this phrase can include getting along with, agreeing with, or working with. If two people are getting along with each other, it means that they have a good relationship and don't have any conflicts. Similarly, if two people are agreeing with each other, it means that they have similar opinions and ideas. Working with someone means that there is a collaborative effort to achieve a common goal, and there is no conflict or disagreement. Therefore, using these antonyms can help avoid unwanted conflicts and promote positive relationships.