Twelvemonth

[Doopliss]

Characters use different terminology and dialect that's specific to them all the time, though. Koji and Foxclon even had a lore panel on it back in the day. It's like how some characters say "aught" vs. "anything", and some say "moon" vs. "months". There have even been some cases where characters use "cycle" vs. "year".

There isn't actually a singular correct version of most words because it's supposed to be a dialect thing. A lot of it depends on region, upbringing, lifestyle, etc. of the person speaking. Voice-wise, at least, the only real consistency is that things in the main three continents tend to be spoken with their fantasy-british accent ("arse" vs "ass"; "shit" vs "shite"; "mom" vs "mum"). I actually think "twelvemonth" fits perfectly well within the game; especially since it is an archaic british term. They loved using those in ARR-SB.

I've actually, personally, have had a problem with the localization team being way less colorful and archaic with their style since basically Shadowbringers, and toning down everyone but Urianger, so I don't mind seeing words like this suddenly get some use.

This is just my opinion, of course. Either way I don't consider it something as thaaat important.

EDIT: Lol I can't believe I forgot this because I use it in RP all the time, but (and this is, of course, using year in a different sense) they also loved using "summers" and more rarely "winters" to describe age and the passing of years. It's really more flexible than you think, and pretty fun to work with.