Etymology

frontier

fron·tier
F4R1O1N1T1I1E1R1

Today it means: The part of a country which borders or faces another country or unsettled region. Full definition →

Middle English frounter ← Old French fronter
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The story

  1. Old French · derived fromfronter
  2. Middle English · inherited fromfrounter
  3. English todayfrontier

From Middle English frounter, from Old French fronter (whence Modern French frontière), from front.

Etymology from Wiktionary, CC BY-SA 4.0.