master

US /ˈmæs.tɚ/
UK /ˈmæs.tɚ/
"master" picture
1.

a man who has people working for him, especially servants or slaves

:
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The master of the house greeted his guests.
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The dog obeyed its master's commands.
:
lordowneremployerrulercommander
2.

a person who has complete control of something

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He is the master of his own destiny.
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She became the master of the situation.
:
controllercommanderrulerdirectorgovernor
3.

a person highly skilled in a particular art or craft

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He is a true master of chess.
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The painting was done by an old master.
:
expertvirtuosomaestrogurupro
1.

to acquire complete knowledge or skill in an art, technique, or subject

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She hopes to master the art of negotiation.
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It took him years to master the guitar.
:
learngraspunderstandexcel inbecome proficient in
2.

to overcome or control something

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•
He managed to master his fear of heights.
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The company needs to master its production costs.
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conquersubduetamecontrolovercome
1.

having or showing very great skill or proficiency

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•
He gave a master class in piano playing.
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The chef prepared a master dish.
:
expertskilledproficientaccomplishedvirtuoso
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master's degreemaster of ceremoniesmaster bedroommaster planwardrobe masterold masterMaster of Science