Etymology

eutonic

E1U1T1O1N1I1C3

Today it means: Pertaining to normal muscle tone. Full definition →

English tonic ← Ancient Greek τονῐκός (tonĭkós) ← Proto-Hellenic *ehu-
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The story

  1. Proto-Indo-European*h₁wes-
  2. Proto-Indo-European*h₁wésus?
  3. Proto-Indo-European*h₁es-?
  4. Proto-Indo-European*h₁su-
  5. Proto-Hellenic*ehu-
  6. Ancient Greekἐΰς (eǘs)
  7. Ancient Greekεὖ (eû)
  8. Englisheu-
  9. Ancient Greekτονῐκός (tonĭkós)
  10. Englishtonic
  11. English todayeutonic

From eu- + tonic.

Etymology from Wiktionary, CC BY-SA 4.0.