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