Confusing words explained
“affect” vs “effect” — What’s the Difference?
Affect is a verb meaning to influence; effect is a noun meaning result or consequence.
Key takeaway
Quick Difference: affect vs effect
Affect is a verb meaning to influence; effect is a noun meaning result or consequence.
affect vs effect Side-by-Side Comparison
Meaning of affect
To have an influence on or cause a change in someone or something.
To change or influence someone or something in some way.
Use as a verb: "This affects me." Do not confuse with "effect" (a noun). The verb-noun pair rhymes: affect (verb) creates an effect (noun).
- The bad weather will affect our travel plans tomorrow.
- How did the decision affect the team's morale?
Meaning of effect
A change or result that is produced because of something else; a consequence.
What happens as a result of something; the change or result that an action or event causes.
Use 'effect' (noun) for results; use 'affect' (verb) for influence. Remember: effect = result (both start with 'e').
- The new law had a positive effect on the economy.
- Smoking has harmful effects on your health.
How to Remember the Difference
Affect = Action (verb). Effect = End result (noun).
Common Mistakes with affect and effect
Mistake with affect
Wrong: Does the weather affect on our plans?
Correct: Does the weather affect our plans?
The verb "affect" does not take the preposition "on"; use it directly with the object.
Mistake with affect
Wrong: I am affect by the cold.
Correct: I am affected by the cold.
Use the past participle "affected" in passive voice constructions, not the base verb "affect".
Mistake with effect
Wrong: The medicine didn't have much affect on his pain.
Correct: The medicine didn't have much effect on his pain.
'Effect' (noun) means result. 'Affect' (verb) means to influence something.
Mistake with effect
Wrong: The new policy will effect many workers negatively.
Correct: The new policy will affect many workers negatively.
'Affect' (verb) = to influence. 'Effect' (noun) = result. This sentence needs the verb 'affect'.
Practice Quiz: affect or effect?
Choose the word that best completes each real example sentence.
Question 1
The bad weather will _____ our travel plans tomorrow.
Question 2
How did the decision _____ the team's morale?
Question 3
The new law had a positive _____ on the economy.
Pick at least one answer, then press Check answers to see how you did.
You scored 0 out of 3
Frequently Asked Questions About affect vs effect
What’s the difference between “affect” and “effect”?
Affect is a verb meaning to influence; effect is a noun meaning result or consequence.
When should I use “affect”?
Use as a verb: "This affects me." Do not confuse with "effect" (a noun). The verb-noun pair rhymes: affect (verb) creates an effect (noun).
When should I use “effect”?
Use 'effect' (noun) for results; use 'affect' (verb) for influence. Remember: effect = result (both start with 'e').
How can I remember affect vs effect?
Affect = Action (verb). Effect = End result (noun).
Is it “affect” or “effect” in example sentences?
Use the quiz above to test the pair with real example sentences from the available word data.