master

(noun) an artist of consummate skill. Synonyms: maestro. Examples: "A master of the violin." "One of the old masters."

(noun) a person who has general authority over others. Synonyms: overlord, lord.

(noun) a combatant who is able to defeat rivals. Synonyms: victor, superior.

(noun) directs the work of others.

(noun) presiding officer of a school. Synonyms: headmaster, schoolmaster.

(noun) an original creation (i.e., an audio recording) from which copies can be made. Synonyms: master copy, original.

(noun) an officer who is licensed to command a merchant ship. Synonyms: captain, sea captain, skipper.

(noun) someone who holds a master's degree from academic institution.

(noun) an authority qualified to teach apprentices. Synonyms: professional.

(noun) key that secures entrance everywhere. Synonyms: passkey, passe-partout, master key.

(verb) be or become completely proficient or skilled in. Synonyms: get the hang. Examples: "She mastered japanese in less than two years."

(verb) get on top of; deal with successfully. Synonyms: overcome, get over, subdue, surmount. Examples: "He overcame his shyness."

(verb) have dominance or the power to defeat over. Synonyms: dominate. Examples: "Her pain completely mastered her." "The methods can master the problems."

(verb) have a firm understanding or knowledge of; be on top of. Synonyms: control. Examples: "Do you control these data?."

(adj) most important element. Synonyms: chief(prenominal), main(prenominal), primary(prenominal), principal(prenominal), master(prenominal). Examples: "The chief aim of living." "The main doors were of solid glass." "The principal rivers of america." "The principal example." "Policemen were primary targets." "The master bedroom." "A master switch."