The term 'chewed on' can be described by the crossword solutions of PONDERED (8 letters), ATE (3 letters), MASTICATED (10 letters), GNAWED (5 letters), GNAWED (6 letters), and mulled over (10 letters). Pondering is a form of deep thought, while eating is the act of consuming food. Mastication is the process of chewing food, and gnawing is the act of biting and tearing at something with one's teeth. Mulling over is the act of considering something carefully. All of these terms describe different aspects of the act of chewing on something.