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