The plural form can change the spelling of nouns.
Basic plural spellings add -s or -es to indicate the plural form of a noun.
Irregular plural spellings can add letters, replace letters or change the spelling completely.
The basic plural spelling rules are:
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Add -s — to most nouns
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Add -es — to nouns ending in: -s, -ch, -sh, -x, -z & -o
To learn more about the plural, visit the concept sheet on plural nouns.
Common irregular plural spellings include:
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Replacing -oo with -ee
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Adding -en or -ren
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Replacing -f/fe with -ves
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Changing the whole word
To learn more about irregular plurals visit the concept sheet on plural nouns.
Plural words ending in -y:
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Add -s when -y follows a vowel
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Change -y to -ies when -y follows a consonant.
To learn more about the spelling of words ending in -y, visit the concept sheet Words Ending in Y.