master
mas-ter
verb
To become completely proficient or skilled in a difficult subject or skill.
"She quickly mastered the new software."
noun
A highly skilled artist, craftsman, or practitioner of a particular art.
"He was a true master of painting."
noun
A person who has control or authority over others or something.
"He is the master of the house."
Thesaurus
Synonyms: master copy, original, get the hang, skipper, captain, sea captain, dominate, superior, victor, control, schoolmaster, headmaster