mistress
noun
[ ˈmɪstrəs ]
• a woman in a position of authority or control.
• "she is always mistress of the situation, coolly self-possessed"
• a woman (other than the man's wife) having a sexual relationship with a married man.
• "Elsie knew her husband had a mistress tucked away somewhere"
Similar:
lover,
girlfriend,
paramour,
kept woman,
live-in lover,
courtesan,
concubine,
inamorata,
hetaera,
sultana,
girlf,
bit on the side,
fancy woman,
lady-love,
doxy,
leman,
• used as a title prefixed to the name of a married woman; Mrs.
Origin:
Middle English: from Old French maistresse, from maistre ‘master’.
