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