Definition of mistress
1 : a woman who has power, authority, or ownership: such asa : the female head of a householdb : a woman who employs or supervises servants The servants were required to do their mistress's bidding without question.c : a woman who is in charge of a school or other establishment Mrs. Goddard was the mistress of a school — Jane Austend : a woman of the Scottish nobility having a status comparable to that of a master
2a chiefly British : a female teacher or tutorb : a woman who has achieved mastery in some field She was a mistress of music.
3 : something personified as female that rules, directs, or dominates when Rome was mistress of the world
4a : a woman other than his wife with whom a married man has a continuing sexual relationshipb archaic : sweetheart
5a —used archaically as a title prefixed to the name of a married or unmarried womanb chiefly Southern US and Midland US : mrs. 1a
Examples of mistress in a sentence
Servants were required to do the mistress's bidding without question.
The dog was always obedient to its master and mistress.
the master and mistress of the house
a married man who has a mistress
His wife suspected that the woman she'd seen with him was his mistress.
Origin and Etymology of mistress
Middle English maistresse, from Anglo-French mestresse, feminine of mestre master — more at master
First Known Use: 14th century
MISTRESS Defined for Kids
Definition of mistress for Students
1 : a female teacher
2 : a woman who has control or authority over another person, an animal, or a thing … the old woman had no loyalty toward her mistress … — Esther Forbes, Johnny Tremain
Seen and Heard
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