- infested with lice
- covered with specks: said of silk
- Informal dirty, disgusting, or contemptible
- Informal poor; inferior: a generalized epithet of disapproval
- Slang well supplied or oversupplied (with)
(comparative lousier, superlative lousiest)
Prior to World War II, it was an offensive insult, implying filthiness. Now considered a mild or rather dated term.
From louse +"Ž -y.