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