Etymology

erratically

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Today it means: In an erratic manner; unsteadily or randomly, unpredictably. Full definition →

English erratic ← Middle English erratik ← Classical Latin errāticus
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The story

  1. Classical Latinerrāticus
  2. Old Frencherratique
  3. Middle Frencherratique
  4. Classical Latinerrāticus
  5. Middle Englisherratik
  6. Englisherratic
  7. English todayerratically

From erratic + -ally.

Etymology from Wiktionary, CC BY-SA 4.0.