decide

(verb) reach, make, or come to a decision about something. Synonyms: make up one's mind, determine. Example: "We finally decided after lengthy deliberations."

(verb) bring to an end; settle conclusively. Synonyms: settle, resolve, adjudicate. Examples: "The case was decided." "The judge decided the case in favor of the plaintiff." "The father adjudicated when the sons were quarreling over their inheritance."

(verb) cause to decide. Example: "This new development finally decided me!."

(verb) influence or determine. Example: "The vote in new hampshire often decides the outcome of the presidential election."