noun
mastery
MAHS-tree
noun
1
Complete or expert skill and knowledge of a subject.
"His mastery of French grammar impressed his teacher."
"Years of practice gave her real mastery over the piano."
2
Control, dominance, or authority over someone or something.
"The empire held mastery over the trade routes for centuries."
How to Use Mastery
Learner’s notesIn plain EnglishTotal command of a skill, or dominance over people or territory.
Common pairings
achieve mastery
mastery of a subject
gain mastery over
Word Forms
masteries plural
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His _____ of French grammar impressed his teacher.
Etymology
From Old French maistrie, built from master plus -y.