According to etymonline, dragon is from the old French dragon, which was derived from the ancient Greek word drakon.

Why did the letter k change to g in old French but didn't change back to "c" or "k" when it was loaned to English? For instance, the English word drachma is derived from the Greek drakhme but in Latin and Old French it was dragma and dragme respectively.

  • 1
    This is not a question about English. Commented Jul 8 at 7:34
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    I’m voting to close this question because it is more about Old French and Greek
    – dubious
    Commented Jul 8 at 7:58
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    It could perhaps be redirected to Latin or Linguistics Stack Exchange. The Indo-European or Latin "c" sometimes became "g", as in Latin draco (from Greek drakon) to dragon; and Latin cithara (from Greek kithara) to guitar. An expert could provide a more detailed answer. As the question is closed now, the OP can try asking on those sites.
    – ermanen
    Commented Jul 8 at 9:03
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    It comes via Latin, which didn't always distinguish /g/ and /k/. It would be unusual for a word to come from ancient Greek via Latin and French into English with exactly the same pronunciation, so I'm not really sure what the exact point of the question is - regardless, as it stands, it's off topic.
    – Stuart F
    Commented Jul 8 at 9:22
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    I’m voting to close this question because the import is faithful, and prior etymology not an English question. // Perhaps the person reversing the closure could explain their reasoning? Commented Jul 9 at 14:13


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