The phrase "buried the hatchet" means to make peace with someone after a disagreement or argument. There are several synonyms for this phrase, including "made amends," "reconciled," "patched things up," "settled their differences," "ended the conflict," and "made peace." These expressions carry a positive connotation and imply a successful resolution of the conflict. Other similar phrases include "called a truce," "forgave and forgot," "put the past behind them," and "came to an understanding." No matter which phrase you use, the message is clear: two parties have resolved their differences and are moving forward in a positive direction.