Where does “-어서는 안 되다” come from?

-어서는 안 되다 (Korean) comes from Korean -는, from Korean 데, from Middle Korean ᄃᆡ, from Middle Korean ᄃᆞ.

-어서는 안 되다 (Korean): to be prohibited to; should not

Definitions

  1. to be prohibited to; should not

Ancestry of “-어서는 안 되다”, step by step

StepLanguageWordMeaning
1Korean-는that is..., that [one] is..., -ing, etc.; suffix attached to the stem of verbs or the existential adjectives
2Korean데—
3Middle Koreanᄃᆡ—
4Middle Koreanᄃᆞ—
Every word from Middle Korean ᄃᆞ →Every word from Middle Korean ᄃᆡ →Every word from Korean 데 →