D defs.my
Entry 3 senses Webster, 1913

Lousy

/louz'-ē/ · Lous·y · IPA /ˈlaʊ.zi/
01 a. Infested with lice.
  1. 1.
    Infested with lice.
  2. 2.
    Mean; contemptible; as, lousy knave.[informal]
    “Such lousy learning as this is.” — Bale.
  3. 3.
    Very bad; as, to feel lousy; to do a lousy job.