Where does “-어야지” come from?

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

-어야지 (Korean): The suffix often implies "one should / must / has to...", and can be used for both self-talk (determination) or to gently criticize someone else

Definitions

  1. The suffix often implies "one should / must / has to...", and can be used for both self-talk (determination) or to gently criticize someone else

Ancestry of “-어야지”, 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