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Adjective
- most important element
- the main doors were of solid glass
- the principal rivers of America
- policemen were primary targets
Noun
- key that secures entrance everywhere
- an authority qualified to teach apprentices
- someone who holds a master's degree from academic institution
- an officer who is licensed to command a merchant ship
- an original creation (i.e., an audio recording) from which copies can be made
- presiding officer of a school
- directs the work of others
- a combatant who is able to defeat rivals
- a person who has general authority over others
- an artist of consummate skill
Verb
- have a firm understanding or knowledge of; be on top of
- Do you control these data?
- have dominance or the power to defeat over
- Her pain completely mastered her
- The methods can master the problems
- get on top of; deal with successfully
- be or become completely proficient or skilled in
- She mastered Japanese in less than two years