| 1. | to act on; produce an effect or change in: Cold weather affected the crops. |
| 2. | to impress the mind or move the feelings of: The music affected him deeply. |
| 3. | (of pain, disease, etc.) to attack or lay hold of. |
| 4. | Psychology. feeling or emotion. |
| 5. | Psychiatry. an expressed or observed emotional response: Restricted, flat, or blunted affect may be a symptom of mental illness, especially schizophrenia. |
| 6. | Obsolete. affection; passion; sensation; inclination; inward disposition or feeling. |

affect af·fect (ə-fěkt')
v. af·fect·ed, af·fect·ing, af·fects
To have an influence on or affect a change in.
To attack or infect, as a disease.
A feeling or emotion as distinguished from thought, or action.
A strong feeling with active consequences.