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