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