Where does “ตอบกลับ” come from?

ตอบกลับ (Thai) comes from Thai ตอบ, from Middle Chinese 答.

ตอบกลับ (Thai): to reply

Definitions

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Ancestry of “ตอบกลับ”, step by step

ตอบกลับ traces back through two separate lines of ancestry.

via Thai ตอบ

StepLanguageWordMeaning
1Thaiตอบto counter; to solve; to answer
2Middle Chinese

via Thai กลับ

StepLanguageWordMeaning
1Thaiกลับto return; to come back; to flip; to turn over
Every word from Middle Chinese Every word from Thai ตอบ
ตอบกลับ — Etymology, Origin & Word History | Etymology Explorer