Etymology

firmness

firm·ness
F4I1R1M3N1E1S1S1

Today it means: security; steadfastness; good grip Full definition →

English firm ← Middle English ferme ← Old French ferme
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The story

  1. Medieval Latinfirma
  2. Medieval Latinferma
  3. Old Frenchferme
  4. Middle Englishferme
  5. Englishfirm
  6. English todayfirmness

From firm + -ness.

Etymology from Wiktionary, CC BY-SA 4.0.