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