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