1. : infested (see infest sense 2) with lice. the ragged, lousy tribesmen T. E. Lawrence. 2. a. : totally repulsive (see repulsive sense 3) : contemptible. a lousy way of getting even. b. : miserably poor or inferior. got lousy grades. c. : somewhat ill. felt lousy after dinner. d. : amply supplied : replete. lousy with money. 3. More @Wikipedia
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