The phrase "greater part" refers to the majority or the largest portion of a group or quantity. There are various synonyms that can be used to replace this phrase, including the following: majority, most, bulk, preponderance, lion's share, greatest portion, vast majority, and predominant part. These terms are often used interchangeably in written and spoken English, depending on the context and tone of the communication. For example, the phrase "the vast majority of people prefer coffee over tea" can be replaced with "most people prefer coffee over tea" or "the predominant part of people prefer coffee over tea." The use of synonyms can enhance the fluency and precision of one's language.