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