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