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