Etymology

lousy

L1O1U1S1Y4

Today it means: Insufficient and less than expected of a good thing. Full definition →

Middle English lousy
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The story

  1. Middle English · inherited fromlousy
  2. English todaylousy

From Middle English lousy, lowsy, lousi, equivalent to louse + -y.

Etymology from Wiktionary, CC BY-SA 4.0.