The term 'crumple into a ball' can be described by three crossword solutions: WAD (3 letters), SCRUNCH (7 letters), and WADUP (5 letters). WAD is an informal verb meaning to form something into a compact mass, usually by pressing or squeezing. SCRUNCH is a verb meaning to crush or squeeze something into a tight ball or mass. WADUP is an informal verb meaning to compress something into a small, tight ball. All three words describe the action of crumpling something into a ball.