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