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