mastery

noun

mas·​tery ˈma-st(ə-)rē 

1

a

: the authority of a master : dominion

b

: the upper hand in a contest or competition : superiority, ascendancy

2

a

: possession or display of great skill or technique

b

: skill or knowledge that makes one master of a subject : command

Synonyms of mastery

• proficiency

Examples of mastery in a Sentence

We were impressed by her mastery of the subject.

She achieved a complete mastery of French.

He struggled to gain mastery of his fears.

Recent Examples on the Web

China’s mastery of rocket reuse would significantly expand the country’s launch capacity, accelerating its ability to close the gap. — Stephen Clark, ArsTechnica, 10 July 2026

Then there’s the mastery of technical skills, physical conditioning, tactical intelligence, vision and mental toughness. — Joshua P. Cohen, Forbes.com, 10 July 2026

Math learning materials can be part of your child’s current math instruction or provide supplemental practice to improve concept mastery. — Bestreviews, Chicago Tribune, 10 July 2026

Head coach Luis de la Fuente’s team—built around players Rodri, Lamine Yamal, and Pedri—is known for its mastery of possession play and attractive passing. — Tushaar Kuthiala, Encyclopedia Britannica, 29 June 2026

Word History

Etymology

Middle English maistrie, from Anglo-French mestrie, maistrie, from meistre master

First Known Use

13th century, in the meaning defined at sense 1a

Phrases Containing mastery

• self-mastery

Kids Definition

mastery

noun

mas·​tery ˈmas-t(ə-)rē 

plural masteries

1

: the position or authority of a master

2

: victory

3

: skill or knowledge that makes one master of something : command

a mastery of French