This noun follows the standard English plural rule: simply add -s to the singular form.
Sister is regular. It follows the Standard -s rule.
Use plural verbs: "The sisters are ready" (not "is ready").
Yes. The plural sisters is standard across all English variants.
The word sister follows the standard English pluralization rule. When forming the plural, sister becomes sisters. This follows the Standard -s pattern, which is one of the most common plural rules in English.
Understanding why sister becomes sisters helps with spelling and pronunciation. This noun follows the standard English plural rule: simply add -s to the singular form.
When using sisters in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The sisters are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.