WordWeb Online

1. Having the power or quality of deciding
   "cast the deciding vote"
   - determinant, determinative, determining

1. The cognitive process of reaching a decision
   - decision making

1. Reach, make, or come to a decision about something
   "We finally decided after lengthy deliberations"
   - make up one's mind, determine
    
2. Bring to an end; settle conclusively
   "The case was decided"; "The judge decided the case in favour of the plaintiff"
   - settle, resolve, adjudicate
    
3. Cause to decide
   "This new development finally decided me!"
    
4. Influence or determine
   "The vote in New Hampshire often decides the outcome of the Presidential election"

See also: decision, decisive

Type of: cause, determine, end, get, have, higher cognitive process, induce, influence, make, mold [N. Amer], mould [Brit, Cdn], regulate, shape, stimulate, terminate