command or grasp, as of a subject

a mastery of Italian.

superiority or victory

mastery over one's enemies.

the act of mastering.

expert skill or knowledge.

the state of being master; power of command or control.

noun

amateurishness , failure , inefficiency , lack

noun

ability , acquirement , adeptness , adroitness , attainment , capacity , cleverness , comprehension , cunning , deftness , dexterity , expertism , expertness , familiarity , finesse , genius , grasp , grip , ken , knack , know-how , knowledge , mastership , power , proficiency , prowess , skill , understanding , virtuosity , wizardry , art , command , craft , expertise , technique , control , domination , dominion , jurisdiction , might , prerogative , sovereignty , sway , dominance , reign , rule , acquisition , conquest , influence , leadership , preminence , superiority , supremacy , triumph , victory