Synonyms of mastery in English:

mastery


See definition of mastery

noun

1‘her mastery of the French language’

SYNONYMS
proficiency, ability, capability
knowledge, understanding, comprehension, familiarity, command, grasp, grip

2‘they played with tactical mastery’

SYNONYMS
skill, skilfulness, expertise, dexterity, finesse, adroitness, virtuosity, prowess, deftness, proficiency
informal know-how

3‘man's mastery over nature’

SYNONYMS
control, superiority, domination, command, ascendancy, supremacy, pre-eminence, triumph, victory, the upper hand, the whip hand, rule, government, power, sway, authority, jurisdiction, dominion, sovereignty