Third-person singular simple present indicative form of decide

(transitive, intransitive) to resolve (a contest, problem, dispute, etc.); to choose, determine, or settle / (intransitive) to make a judgment, especially after deliberation

simple past tense and past participle of decide

Determined; resolute. / Clear; unmistakable.

A voter etc. who has reached their decision.

present participle of decide

(of a controversy, question, etc) A person, divinity, or authoritative text which decides. / (chiefly Britain, Australia, sports) An event or action which decides the outcome of a contested matter.

plural of decider

capable of being decided. / (computer science) describing a set for which there exists an algorithm that will determine whether any element is or is not within the set in a finite amount of time.

(logic, computer science) The state or condition of being decidable.