This noun follows the standard English plural rule: simply add -s to the singular form.
Expertise is regular. It follows the Standard -s rule.
Use plural verbs: "The expertises are ready" (not "is ready").
Yes. The plural expertises is standard across all English variants.
The word expertise follows the standard English pluralization rule. When forming the plural, expertise becomes expertises. This follows the Standard -s pattern, which is one of the most common plural rules in English.
Understanding why expertise becomes expertises helps with spelling and pronunciation. This noun follows the standard English plural rule: simply add -s to the singular form.
When using expertises in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The expertises are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.