One's say refers to expressing one's opinion, view, or perspective on a particular subject matter. The antonyms for the phrase include silence, reserve, and apathy. Silence refers to the absence of speech, and if one chooses not to speak, they are not expressing their opinion. Reserve, on the other hand, means to hold back or restrain from expressing one's views or opinions. Lastly, apathy suggests a lack of interest or concern in the subject matter, resulting in the absence of any opinion or view on the matter at hand. While it is essential to express one's say, sometimes it is better to listen, understand and evaluate before sharing one's opinion.