t wrote:In latin you could say it's fora. 2nd declension neuter noun
In English as a native speaker I feel that forums is best.
So much of English is rooted in Latin. Plural of any noun ending in 'um' always ends in 'a', like flora and fauna.
IMO forums is bad English-GB.
![Confused :?](./images/smilies/icon_confused.gif)