D defs.my
Entry 5 senses Webster, 1913

Affair

/(ăf*fâr")/ · Af·fair · IPA /əˈfɛɹ/
01 n. That which is done or is to be done; matter; concern; as, a difficult affair to manage; business of any kind, commercial, professional, or …
  1. 1.
    That which is done or is to be done; matter; concern; as, a difficult affair to manage; business of any kind, commercial, professional, or public; -- often in the plural. “At the head of affairs.” Junius.
  2. 2.
    Any proceeding or action which it is wished to refer to or characterize vaguely; as, an affair of honor, i. e., a duel; an affair of love, i. e., an intrigue.
  3. 3.
    An action or engagement not of sufficient magnitude to be called a battle.(Mil.)
  4. 4.
    Action; endeavor.[Obs.]
    “And with his best affair Obeyed the pleasure of the Sun.” Chapman.
  5. 5.
    A material object (vaguely designated).
    “A certain affair of fine red cloth much worn and faded.” Hawthorne.