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