Affair

1. n. A material object (vaguely designated).
2. 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 public; — often in the plural. “At the head of affairs.” Junius.
3. n. 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.
4. n. An action or engagement not of sufficient magnitude to be called a battle.
5. n. Action; endeavor.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.