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