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