Where does “-다 뿐이지” come from?

-다 뿐이지 (Korean) comes from Korean -지, from Middle Korean -디〮, from Middle Korean -이〮, from Old Korean 是 — Nominative case marker.

Ancestry of “-다 뿐이지”, step by step

StepLanguageWordMeaning
1Korean-지Used to contrast two facts regarding the same topic, thereby emphasizing both facts. In conversation, it is usually used to deny or qualify something the other person has said. The second fact tends to be negated or a rhetorical question
2Middle Korean-디〮
3Middle Korean-이〮
4Old KoreanNominative case marker
Every word from Old Korean Every word from Korean -지Every word from Middle Korean -이〮