The phrase "most interracial" can be substituted by several synonyms depending on the context of the text. Some possible synonyms include highly diverse, predominantly mixed-race, primarily cross-cultural, extensively interracial, and overwhelmingly blended. These synonyms are useful in describing situations or communities where individuals of different races and cultures are prevalent. For instance, a university with a large population of students from diverse racial and ethnic backgrounds can be described as highly diverse or predominantly mixed-race. Similarly, a marriage between partners from different races can be referred to as extensively interracial or overwhelmingly blended. Hence, the use of synonyms enhances the richness and texture of language, enabling writers to convey intended meanings more explicitly.