Etymology

moody

M3O1O1D2Y4

Today it means: Given to sudden or frequent changes of mind; temperamental. Full definition →

Middle English mody ← Old English mōdiġ ← Proto-Germanic *mōdagaz
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The story

  1. Proto-Germanic · inherited from*mōdagaz“courageous”
  2. Old English · inherited frommōdiġ“brave”
  3. Middle English · inherited frommody
  4. English todaymoody

From Middle English mody, modi, from Old English mōdiġ (“brave”), from Proto-Germanic *mōdagaz (“courageous”). By surface analysis, mood + -y.

Etymology from Wiktionary, CC BY-SA 4.0.