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