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