Affect vs Effect: Key Differences

Learning when to use affect vs effect can be a little tricky, but once you have it down, it’s easy to remember!

This is a common error for writers, even for people who speak English as a first language, so if you’re struggling with it, there’s nothing to be ashamed of!

In this guide, we’ll cover the difference between affect and effect, when to use each, how to identify which you need, and a mnemonic to help you remember.

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The short answer: affect vs effect difference

Here’s the quick solution to affect vs effect: in almost all cases, “affect” is a verb and “effect” is a noun. If you want to say something is affecting something else, you’ll use “affect.” If you want to say something had an effect, you’ll use “effect.” 

Affect = action

Effect = result

A very quick trick to help remember this is to simply pronounce the vowels differently in your mind until you have it down. When you’re ah-ffecting something it has an ee-ffect.

The long answer: affect vs effect

Wondering when to use affect or effect? Here’s everything you need to know.

1. Affect: definition

Affect is a verb meaning to act on, influence, or produce a change in someone or something.

For example:

The winter weather affects his mood.

2. Effect: definition

Effect is a noun meaning the result or product of something.

For example:

Mixing baking soda and vinegar creates a surprising effect.

3. Using affect vs effect

In the vast majority of cases, affect is a verb and effect is a noun, so if you know your parts of speech, you’ll know which one to use.

If you’re not sure, ask yourself:

• Could I replace this word with another verb?

• Could I replace this word with the word “result?”

If it can be replaced with a verb, you’ll want to use “affect.”

For example:

The winter weather affects his mood.

The winter weather changes his mood.

The winter weather depresses his mood.

If the word can be replaced with the noun “result,” you should use “effect.”

For example:

Mixing baking soda and vinegar creates a surprising effect.

Mixing baking soda and vinegar creates a surprising result.

Worth noting: There are rare exceptions to this rule, keep reading to learn more!

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How to remember affect vs effect

There are a few tricks to help you remember which is which between affect and effect:

• Memorize that affect = action, effect = results

• Say out loud: When you’re ah-ffecting something it has an ee-ffect.

• Ask, can you replace this word with a verb? Can you replace it with the noun “result?”

• Use the mnemonic RAVEN

The first three we’ve already covered, but how about that mnemonic?

R.A.V.E.N.

A mnemonic is any mental shortcut we use to remember something, like an acronym, image, or association of ideas. At Busuu, we use mnemonics frequently – they’re a great way to make sure something sticks!

In this case, the mnemonic is an acronym: R.A.V.E.N.

Remember: Affect Verb, Effect Noun.

Remember

Affect

Verb

Effect

Noun

Got it? Great! If you want to add an image to remind you of this mnemonic, you can even try to picture a raven and remember – it’s all caws and effect!

Affect and effect exceptions

Now that you’ve mastered when to use affect and effect most of the time, there are a few exceptions you should know.

In rare cases:

• Affect can have another meaning as a verb or adjective

• Affect can be a noun 

• Effect can be a verb

It is much, much less common to use affect as a noun or effect as a verb, but when we do, it’s because they have different meanings when used differently. 

Secondary definitions

Affect second meaning/as an adjective

A behavior that masks or pretends to be something else.

For example:

She wasn’t British, but she had an affected accent.

He affected an air of snobbishness.

Affect as a noun

A behavior or mannerism relating to someone’s speech or portrayed emotions, especially in a psychological context.

For example:

The patient had a strange affect.

Effect as a verb

To cause or directly bring about. Typically used with a noun as a direct object, most commonly “change.”

For example:

I signed the petition because I want to effect change in the birdwatching community.

This is a little tricky! Essentially, to “affect change” would be to have an influence on the type or quality of the change, in a scenario where a change is already happening, while to “effect change” is to make change happen at all.

Chart: affect vs effect examples 

Here are a few more examples to help you practice recognizing the differences between affect and effect and when to use each.

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