Etymology

fidelitous

F4I1D2E1L1I1T1O1U1S1

Today it means: Faithful Full definition →

Proto-Indo-European *h₃édosder.? ← English fidelity ← Middle English fidelite
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The story

  1. Middle Englishfidelite
  2. Englishfidelity
  3. Proto-Indo-European*h₃ed-
  4. Proto-Indo-European*h₃édosder.?
  5. English todayfidelitous

From fidelity + -ous.

Etymology from Wiktionary, CC BY-SA 4.0.