Nouns ending in -s, -x, -z, -ch, or -sh add -es to form the plural. This makes the word easier to pronounce.
Mattress is regular. It follows the -es Addition rule.
Use plural verbs: "The mattresses are ready" (not "is ready").
Yes. The plural mattresses is standard across all English variants.
The word mattress follows the standard English pluralization rule. When forming the plural, mattress becomes mattresses. This follows the -es Addition pattern, which is one of the most common plural rules in English.
Understanding why mattress becomes mattresses helps with spelling and pronunciation. Nouns ending in -s, -x, -z, -ch, or -sh add -es to form the plural. This makes the word easier to pronounce.
When using mattresses in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The mattresses are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.