Definition
Lousy means terrible, bad, or of poor quality. It's used to describe something unpleasant or disappointing. Think of it as worse than 'bad' but not quite 'horrific.' It can apply to almost anything, from a 'lousy' movie to a 'lousy' day. Sometimes, it implies something is infested with lice, but that's less common now. Imagine having a really bad headache – that would make you feel lousy.