Agreeing with someone is a common way to show SUPPORT and understanding. The crossword solutions for the term AGREE WITH include AMEN (4 letters), SUPPORT (7 letters), TALLY (5 letters), CONCUR (6 letters), NOD (3 letters), SIDE (4 letters), YES (3 letters), ECHO (4 letters), JIBE (4 letters), and SITWELL (7 letters). AMEN is an expression of agreement or approval, while SUPPORT is a form of assistance or encouragement. TALLY is a synonym for agree, CONCUR means to accept or approve, and nodding is a physical gesture of agreement. Saying YES is another way to express agreement, as is echoing someone's words. JIBE is a slang term for agreeing, and sitwell is an old-fashioned phrase meaning to agree.