따문

Etymology
Cognate with 🇨🇬. Further etymology.

Dependent noun

 * 1) cause, reason

Usage notes
Unlike with Korean, contemporary Jeju 따문 has been used with not only the nominalizing verb ending , but also with the verb ending. Thus, it's possible to see both and  in usage. Additionally, when saying "for what reason" or "why", instead of, like with Korean , Jeju uses the determiner to make the construction.

Additionally, due to being an expression that shows causation, 따문 and words with similar meaning cannot be followed by, and can only be followed by grammatically. However, as seen by the Jeju Preservation Society quote above, speakers may conflate the particles, due to having almost identical usages otherwise.