noun
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(often in the plural) Something which is done or is to be done; business of any kind, commercial, professional, or public.
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Any proceeding or action which it is wished to refer to or characterize vaguely.
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(military) An action or engagement not of sufficient magnitude to be called a battle.
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A material object (vaguely designated).
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An adulterous relationship, chiefly of a married person. (from affaire de cœur, affair of the heart).
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An otherwise illicit romantic relationship, such as with someone who is not one's regular partner (boyfriend, girlfriend).
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A person with whom someone has an adulterous relationship.
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A party or social gathering, especially of a formal nature.
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(slang, now rare) The (male or female) genitals.