Nouns ending in -a (often Latin or scientific) add -e to form the plural.
Opera is regular. It follows the -ae Addition rule.
Use plural verbs: "The operae are ready" (not "is ready").
Yes. The plural operae is standard across all English variants.
The word opera follows the standard English pluralization rule. When forming the plural, opera becomes operae. This follows the -ae Addition pattern, which is one of the most common plural rules in English.
Understanding why opera becomes operae helps with spelling and pronunciation. Nouns ending in -a (often Latin or scientific) add -e to form the plural.
When using operae in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The operae are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.