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