A married mans mistress is a woman who is not his wife and with whom he is having a sexual relationship. Discover expressions like be ones own mistress, … Generally, the relationship is stable and at … A female school…. A woman who, most often secretly, has an ongoing sexual relationship with, and sometimes is financially supported by, someone who is openly married to, engaged to, or … A woman who has control of something: Woman in an extramarital relationship. Something thought of as feminine that has control:[sometimes: Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Definition of mistress noun in oxford advanced learners dictionary. A woman who has control over or responsibility for someone or something: How to use mistress in a sentence. The meaning of mistress is a woman who has power, authority, or ownership. The mistress of a great fortune. Check meanings, examples, usage tips, pronunciation, domains, and related words. A mistress is usually in a long-term good relationship with a person who is married to someone else and is often referred to as the other woman. A woman who has a continuing sexual relationship with a … · in the extramarital sense, mistress is often narrowly taken to mean a woman involved in a committed extramarital relationship (an affair), often supported financially (a kept … Mistress] great britain, mistress of the seas. Mistress synonyms, mistress pronunciation, mistress translation, english dictionary definition of mistress.