Gain back is a term used to describe the process of regaining something that was lost or taken away. The crossword solutions for this term are RECOUP (6 letters), REWIN (5 letters), and RETAKE (6 letters). RECOUP means to recover something lost, usually through compensation or reimbursement. REWIN means to win back something that was previously lost. RETAKE means to take back something that was previously taken away.