There are several synonyms for the phrase "was with you." Some of the common synonyms include "hung out with you," "spent time together," "joined you," "accompanied you," "kept you company," and "associated with you." These similar phrases can be helpful when trying to convey the same message in different language styles or contexts. Using synonyms not only makes your writing more interesting, but it also helps to avoid repetition and enhances clarity. With a rich vocabulary of synonyms at your disposal, you can communicate more effectively and express your ideas in a variety of ways.