The phrase "more trilateral" refers to something that involves three parties or countries. There are several synonyms for this term, including "triangular," "three-way," "triform," and "trioecious." Each of these words describes something that is composed of three parts or entities. It is important to consider the context in which these terms are used and to choose the one that best conveys the intended meaning. "Triangular," for example, may be used to describe a relationship between three individuals, while "three-way" could refer to a business deal involving three companies. Whatever the application, these synonyms provide options for expressing the concept of something being trilateral.