One could say that there are a plethora of synonyms for the phrase "puts one's two cents in." This idiomatic expression generally refers to offering one's unsolicited opinion on a matter or getting involved in a conversation without being asked. Alternative phrases that convey a similar meaning include "chips in," "butts in," "throws in one's two cents," "adds one's voice," "voices one's opinion," and "interjects." Additionally, one might use "puts in a word," "makes a comment," "contributes to the discussion," or "offers input." Regardless of the specific wording, these phrases all capture the essence of putting one's opinion out there, even when it may not be necessary or welcome.
