"Pal around with" is a commonly used expression that means spending time with a close friend or companion. There are several other phrases you can use instead of "pal around with" to convey the same meaning. Some of the popular synonyms for this expression include "hang out with," "keep company with," "spend time with," "associate with," "run around with," "be buddies with," or "socialize with." These phrases are interchangeable and can be used in various contexts to describe casual and friendly relationships. So next time you want to talk about spending time with your best friend, consider using one of these synonyms instead of saying "pal around with".