The crossword solution for the term 'SAY 'NOTHIN'', is ELIDE (5 letters). ELIDE is a verb meaning to omit or leave out, especially when speaking or writing. It is often used in the phrase 'ELIDE over, ' which means to pass quickly and lightly over something without giving it much attention. In this context, the phrase 'SAY 'Nothin'' could be interpreted as a suggestion to ELIDE over a particular topic or conversation.