v. 1 a intr. (often foll. by on, about) come to a resolution as a result of consideration. b tr. (usu. foll. by to + infin., or that + clause) have or reach as one's resolution about something (decided to stay; decided that we should leave). 2 tr. a cause (a person) to reach a resolution (was unsure about going but the weather decided me). b resolve or settle (a question, dispute, etc.). 3 intr. (usu. foll. by between, for, against, in favour of, or that + clause) give a judgement concerning a matter. decidable adj.
[ ME f. F décider or f. L decidere (as DE-, cdere cut) ]