The term 'has one's say' can be summarized by two crossword solutions: 'OPINES' and 'speaks'. 'OPINES' is a verb meaning to express an opinion or belief, while 'speaks' is a verb meaning to communicate with words. Both words refer to the act of expressing oneself, either through verbal or written communication. This phrase is often used to emphasize the importance of having a voice in a discussion or debate.