Plural rule guide
What is the Plural of “Invalid”?
Learn the singular and plural noun forms, the rule behind the plural, and examples that show the form in context.
Singularinvalid→Pluralinvalids
Rule: regular
Singular and Plural Form of Invalid
Invalid is the singular noun form. Invalids is the plural form.
Why is the Plural of Invalid “invalids”?
The Regular Plural Rule for Invalid
Most English nouns form the plural by adding -s. Example: invalid → invalids
How to Remember the Plural of Invalid
Just add -s to “invalid” to make “invalids”. Most English nouns follow this pattern.
Frequently Asked Questions About the Plural of Invalid
What is the plural of “invalid”?
The plural of “invalid” is “invalids”.
Is “invalids” regular or irregular?
This page classifies it as regular based on the available plural data.