The term 'SAY 'Yes' To' can be expressed in a variety of ways. The most common solutions to this crossword are ACCEPT (6 letters), ACCEDE (6 letters), APPROVE (7 letters), LET (3 letters), and OKAY (4 letters). Accepting something means to receive it willingly, while acceding is to agree to a request or demand. Approving is to give consent or agreement, while letting is to allow something to happen. Lastly, OKAY is an informal way of expressing agreement.