Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
Vitality is regular. It follows the -ies Conversion rule.
Use plural verbs: "The vitalities are ready" (not "is ready").
Yes. The plural vitalities is standard across all English variants.
The word vitality follows the standard English pluralization rule. When forming the plural, vitality becomes vitalities. This follows the -ies Conversion pattern, which is one of the most common plural rules in English.
Understanding why vitality becomes vitalities helps with spelling and pronunciation. Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
When using vitalities in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The vitalities are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.