Where does “말이 아니다” come from?

말이 아니다 (Korean) comes from Korean 말, from Chinese 末.

Ancestry of “말이 아니다”, step by step

말이 아니다 traces back through 3 separate lines of ancestry.

via Korean

StepLanguageWordMeaning
1Koreanword, speech, language; horse; sawhorse
2Chinese

via Korean —이

StepLanguageWordMeaning
1Korean—이For non-honorific nouns ending in consonants, the nominative case particle marking it as the subject of a verb or adjective; see also Usage Notes
2Middle Koreanperson

via Korean 아니다

StepLanguageWordMeaning
1Korean아니다to be not
Every word from Chinese
말이 아니다 — Etymology, Origin & Word History | Etymology Explorer