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