Dictionary-enhanced plural guide
What is the Plural of “Effect”?
Learn the singular and plural noun forms, the rule behind the plural, and examples that show the form in context.
Singular and Plural Form of Effect
Effect is the singular noun form. Effects is the plural form.
Dictionary meaning: What happens as a result of something; the change or result that an action or event causes.
Why is the Plural of Effect “effects”?
The Regular Plural Rule for Effect
Most English nouns form the plural by adding -s. Example: effect → effects
Plural pattern: regular.
How to Remember the Plural of Effect
Just add -s to “effect” to make “effects”. Most English nouns follow this pattern.
A common slip-up: Often confused with 'affect' (/əˈfɛkt/); 'effect' has primary stress on second syllable..
Singular vs Plural Examples with Effect
See effect and effects used in real sentences side by side.
- The new law had a positive effect on the economy. B1
- Smoking has harmful effects on your health. B1
- We did not see the full effect of the medicine until a week later. B1
Common Plural Mistakes 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.
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'.
How to Pronounce Effect and Effects
Stress the second syllable: ef-FECT. Different from 'affect' which is pronounced uh-FECT.
Other Words With the Same Plural Pattern as Effect
These nouns follow the same regular rule. Click any word to see its plural page.
A response or behavior that happens because of something someone does or…
Someone who reads or enjoys reading books and written material.
An official rule made by government or organization that people must follow.
A connection between things or people; family members or how people know…
Something that helps you succeed or do better than others at something.
A thrilling journey or experience with something unexpected or risky happening.
How old someone is or how long something has been around, measured…
What you say or write when someone asks you a question, or…
Origin and Etymology of Effect
From Old French 'effect', from Latin 'effectus' (accomplishment), derived from 'efficere' (to bring about).
Frequently Asked Questions About the Plural of Effect
What is the plural of “effect”?
The plural of “effect” is “effects”.
Is “effects” regular or irregular?
This page classifies it as regular based on the available plural data.