An action or engagement not of sufficient magnitude to be called a battle.
An adulterous relationship (from affaire de cœur, affair of the heart).
A person with whom someone has an adulterous relationship.
A romantic relationship with someone who is not one's regular partner (boyfriend, girlfriend).
Something which is done or is to be done; business of any kind, commercial, professional, or public.
A party or social gathering, especially of a formal nature.
Any proceeding or action which it is wished to refer to or characterize vaguely.
A material object (vaguely designated).