Where does “옛글” come from?

옛글 (Korean) comes from Korean 옛, from Middle Korean 녯.

Ancestry of “옛글”, step by step

옛글 traces back through two separate lines of ancestry.

via Korean 옛

StepLanguageWordMeaning
1Korean옛old; bygone
2Middle Korean녯—

via Korean 글

StepLanguageWordMeaning
1Korean글a piece of writing; a written work such as a book...
Every word from Middle Korean 녯 →Every word from Korean 옛 →