Nouns ending in -s, -x, -z, -ch, or -sh add -es to form the plural. This makes the word easier to pronounce.
Genius is regular. It follows the -es Addition rule.
Use plural verbs: "The geniuses are ready" (not "is ready").
Yes. The plural geniuses is standard across all English variants.
The word genius follows the standard English pluralization rule. When forming the plural, genius becomes geniuses. This follows the -es Addition pattern, which is one of the most common plural rules in English.
Understanding why genius becomes geniuses helps with spelling and pronunciation. Nouns ending in -s, -x, -z, -ch, or -sh add -es to form the plural. This makes the word easier to pronounce.
When using geniuses in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The geniuses are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.