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