affair

/ə-ˈfer/

Middle English aferes "activities," affaire "enterprise," borrowed from Anglo-French afaire, affere "business, activity, enterprise, matter, topic, situation," from the phrase a faire "to do," from a "to" (going back to Latin ad) + faire "to do," going back to Latin facere

noun

  1. commercial, professional, public, or personal business

  2. matter, concern

  3. a procedure, action, or occasion only vaguely specified; also : an object or collection of objects only vaguely specified

handles the company's public affairs

How I choose to live is my affair, not yours.

noun

  1. a romantic attachment or episode between lovers

  2. a lively enthusiasm

idiom

  1. a situation or matter that someone should not interfere in by saying, doing, or asking anything about it

What I do in my spare time is none of your business.