Affair1. (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.
2. (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.
3. (n.) An action or engagement not of sufficient magnitude to be called a battle.
4. (n.) Action; endeavor.
5. (n.) A material object (vaguely designated).
Thesaurus Entries
activities, activity, adulterous affair, adultery, affairs, amor, amour, article, artifact, at home, attempt, bag, beeswax, business, care, commerce, commitment, concern, concernment, contract, cuckoldry, cup of tea, deal, dingus, dofunny, dohickey, doing, dojigger, dojiggy, domajig, domajigger, doodad, dowhacky, effort, employ, employment, engagement, entanglement, enterprise, eppes, eternal triangle, etwas, event, fling, flirtation, flumadiddle, forbidden love, function, gadget, gathering, get-together, gigamaree, gimmick, gizmo, hanky-panky, happening, hickey, hootenanny, hootmalalie, illicit love, incident, infidelity, interest, intrigue, issue, jigger, job, labor, levee, liaison, lookout, love, love affair, material thing, matinee, matter, object, obligation, occasions, occupation, occurrence, operation, palaver, pie, plan, proceeding, program, project, proposition, quelque chose, reception, relationship, responsibility, reunion, romance, romantic tie, salon, service, sociable, social, social affair, social gathering, soiree, something, task, thing, thingum, thingumabob, thingumadad, thingumadoodle, thingumajig, thingumajigger, thingumaree, thingummy, topic, transaction, triangle, undertaking, unfaithfulness, venture, wake, whatchy, widget, work