The phrase "make one's mind" means to come to a decision or a conclusion. There are several synonyms for this phrase that can be used to express the same meaning. These synonyms include "decide," "determine," "settle," "conclude," "resolve," and "make up one's mind." Each of these words can be used interchangeably with the phrase "make one's mind," depending on the context. For instance, you can use "decide" when you are referring to someone making a choice. On the other hand, "resolve" can be used when describing a situation that has been resolved through a decision. Regardless of the synonym used, the meaning of "make one's mind" remains unchanged.