The crossword solution for the term TAG, SAY is DEFACE, which is a six-letter word. Defacing is the act of damaging or altering something, usually a public property such as a building or monument, by writing on it or otherwise marking it in a way that is considered vandalism. It is often done to express a political opinion or to make a statement. Defacing can also refer to the act of changing the appearance of something, such as a photograph or a website, without permission.