English Reference

Word

mistress

Phoneticsmis·tress, stress on the first syllable

US/ˈmɪstɹəs/

UK/mˈɪstɹəs/

Definitions

01extramarital partner

B2 · Upper Intermediate Countable noun

n. a woman who has a long-term sexual relationship with a man who is married to someone else.

n. a woman who is involved in a long-term sexual relationship with a married man. The term implies a degree of financial or emotional support from the man.

“The king's mistress lived in a private house near the palace.”

“Historical accounts suggest that the king's mistress exerted significant political influence over the court despite having no official title.”

Synonyms

loverthe other woman

Antonyms

02woman in authority

C1 · Advanced Countable noun Formal · Literary

n. a woman who is in charge of a place, a household, or a group of people.

n. a woman who has power, authority, or ownership, particularly as the head of a household or institution.

“She was the mistress of a large estate with many servants.”

“As the mistress of the house, she was responsible for managing the domestic staff and overseeing the annual budget.”

Synonyms

Antonyms

03skilled woman

C1 · Advanced Countable noun Formal · Literary

n. a woman who is very skilled or talented at a particular activity.

n. a woman who has achieved a high degree of proficiency or mastery in a specific craft, art, or field of study.

“She was a mistress of the violin and played in the national orchestra.”

“The author proved herself a mistress of suspense, keeping readers guessing until the final chapter of the novel.”

Synonyms

Antonyms

04historical title

C2 · Proficiency Countable noun Archaic

n. a title used in the past for a woman, which later became the short form 'Mrs'.

n. an archaic title of address for a woman of social standing, now surviving primarily in the abbreviated form 'Mrs'.

“In the old story, the character is addressed as Mistress Page.”

“The document, dated 1640, refers to the landowner as Mistress Elizabeth Thornton.”

Synonyms

Real-World Examples

“They also called dozens of witnesses, including his former mistress Alleigha Botner, whom he met while she was an intern at his church.”
BBC News 29 Sept 2026
“He went to great lengths to conceal her because, even though many men had mistresses, it wasn’t something that gentlemen broadcast in polite society.”
Aeon 3 Sept 2026

Word family

NOUN

mistress(C1)

Idioms

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Frequent
Level
C1 · Advanced
Updated

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