The term 'give permission' can be expressed in a variety of ways, including the crossword solutions of CONSENT (7 letters), LET (3 letters), ALLOW (5 letters), sayok (5 letters), and sayyes (6 letters). CONSENT is an agreement to do something or to ALLOW something to happen, while LET is a verb meaning to ALLOW or permit. ALLOW is another verb that means to give permission or to grant permission. Sayok is an informal way of saying yes or giving permission, while sayyes is another informal way of expressing agreement or giving permission.