Plural Nouns
Apply the productive spelling patterns first, then check irregular forms and special noun classes. Plural form and verb agreement are related but not identical issues, and collective-noun agreement follows its own context-sensitive rules.
Most English count nouns form the plural with “-s” or “-es,” with spelling changes in patterns such as “city → cities.” English also has irregular plurals and nouns that are normally singular-only or plural-only, so dictionary evidence matters for exceptions.
Key details
Further guidance
Irregulars
Learn high-frequency irregular forms individually, such as “child → children” and “person → people,” rather than inventing a spelling rule for them.
Regular Patterns
Add “-s” to most nouns; use “-es” after many sibilant endings; change consonant + “y” to “-ies” in standard patterns such as “city → cities.”
Special Classes
Some nouns are ordinarily plural-only (“scissors”), singular-only, or uncountable in a given meaning. Do not force them into the regular count-noun pattern.
Worked Example
“Report → reports” follows the default pattern; “box → boxes” takes “-es”; “city → cities” changes consonant + y; “children” is irregular.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Spelling — spelling and plurals (opens in a new tab)Cambridge University Press · Gives productive spelling rules for regular plural formation, including -s, -es, -y and selected -f/-fe and -o patterns.
- Nouns: singular and plural (opens in a new tab)Cambridge University Press · Defines collective nouns and explains singular/plural verb agreement according to whether a group is treated as one unit or individuals, with usage variation.