To act upon; to produce an effect or change upon.
- To have an influence on or effect a change in: Inflation affects the buying power of the dollar.
- To act on the emotions of; touch or move.
- To attack or infect, as a disease: Rheumatic fever can affect the heart.
- Feeling or emotion, especially as manifested by facial expression or body language: "The soldiers seen on television had been carefully chosen for blandness of affect” ( Norman Mailer).
- Obsolete A disposition, feeling, or tendency.
- To put on a false show of; simulate: affected a British accent.
- To have or show a liking for: affects dramatic clothes.
- Archaic To fancy; love.
- To tend to by nature; tend to assume: a substance that affects crystalline form.
- To imitate; copy: "Spenser, in affecting the ancients, writ no language” ( Ben Jonson).