The term 'back and forth' can be described by several crossword solutions, including 'SEESAW' (6 letters), 'qanda' (5 letters), 'BANTER' (6 letters), 'EXCHANGE' (8 letters), 'REPARTEE' (8 letters), and 'toandfro' (8 letters). SEESAW is a plaything consisting of a board balanced on a central pivot, used by children at either end to make it go up and down. Qanda is an acronym for 'question and answer', which is a conversation between two or more people in which questions are asked and answered. BANTER is lighthearted, playful conversation. EXCHANGE is the act of giving one thing and receiving another in return. REPARTEE is witty conversation or reply. Toandfro is a movement back and forth. All of these words describe the concept of back and forth movement, whether it be physical, verbal, or otherwise.