Greek-derived nouns ending in -on change to -a in the plural form.
Rebellion is regular. It follows the Greek -a rule.
Use plural verbs: "The rebellia are ready" (not "is ready").
Yes. The plural rebellia is standard across all English variants.
The word rebellion follows the standard English pluralization rule. When forming the plural, rebellion becomes rebellia. This follows the Greek -a pattern, which is one of the most common plural rules in English.
Understanding why rebellion becomes rebellia helps with spelling and pronunciation. Greek-derived nouns ending in -on change to -a in the plural form.
When using rebellia in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The rebellia are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.