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