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