Is "affect" a verb?

A little morei

In everyday writing, affect is the action and effect is the result. There is a rare noun form of affect used in psychology ("flat affect"), but you will not hit it in ordinary sentences. When you want the verb, reach for affect — when you want the result, reach for effect.

The full entryii

More quick answersiii

• → Is "effect" a noun? Yes. "Effect" is almost always a noun — the result of something: the effect was immediate.
• → Is it "affect" or "effect"? Use affect for the verb (influence). Use effect for the noun (result).
• → Is it "deeply affected" or "deeply effected"? "Deeply affected." The word describes an action done to someone — that's the verb affect.
• → Is it "side affects" or "side effects"? "Side effects." The side things are results, not actions — that's the noun effect.