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