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