AFFECT or INFLUENCE
- 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”.
- Obsolete. A disposition, feeling, or tendency.
affect, influence, impress, touch, move, strike.
These verbs mean to produce a mental or emotional effect.
- To affect is to act upon a person's emotions: Adverse criticism of the book didn't affect the author.
- To influence implies some control over the thinking, actions, and emotions of another: “Humanity is profoundly influenced by what you do” .
- To impress is to produce a marked, often enduring effect: “The Tibetan landscape particularly impressed him”
- To touch usually means to arouse a tender response: “The tributes [to the two deceased musicians] were fitting and touching”
- To move suggests a profound emotional effect: The account of her experiences moved us to tears.
- To strike implies keenness or force of mental response: I was struck by the sudden change in his appearance.
IV. USAGE NOTE
Affect and effect have no senses in common. As a verb affect is most commonly used in the sense of “to influence” (how smoking affects health). Effect means “to bring about or execute”: layoffs designed to effect savings. Thus the sentence These measures may affect savings could imply that the measures may reduce savings that have already been realized, whereas These measures may effect savings implies that the measures will cause new savings to come about.