Etymology

deeply

deep·ly
D2E1E1P3L1Y4

Today it means: To a deep extent or degree; very greatly. Full definition →

Middle English deply ← Old English dēoplīċe
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The story

  1. Old English · inherited fromdēoplīċe“deeply”
  2. Middle English · inherited fromdeply
  3. English todaydeeply

From Middle English deply, depely, from Old English dēoplīċe (“deeply”, adverb), from dēoplīc (“deep”), equivalent to deep + -ly.

Etymology from Wiktionary, CC BY-SA 4.0.