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