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