Decide on is a term used to describe the process of making a choice between two or more options. It can be done by choosing, selecting, opting, or electing one of the options. The term is often used in the context of making decisions, such as when deciding on a course of action or a particular item. The term can also be used to refer to the act of making a decision itself. In this case, the crossword solutions for the term Decide On are CHOOSE, SELECT, OPT, ELECT, and OPTFOR.