Most nouns ending in -o add -es to form the plural (with some exceptions like photo/photos).
Yoyo is regular. It follows the -es Addition rule.
Use plural verbs: "The yoyoes are ready" (not "is ready").
Yes. The plural yoyoes is standard across all English variants.
The word yoyo follows the standard English pluralization rule. When forming the plural, yoyo becomes yoyoes. This follows the -es Addition pattern, which is one of the most common plural rules in English.
Understanding why yoyo becomes yoyoes helps with spelling and pronunciation. Most nouns ending in -o add -es to form the plural (with some exceptions like photo/photos).
When using yoyoes in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The yoyoes are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.