LOUSY
lousy
(adjective) infested with lice; “burned their lousy clothes”
icky, crappy, lousy, rotten, shitty, stinking, stinky
(adjective) very bad; “a lousy play”; “it’s a stinking world”
dirty, filthy, lousy
(adjective) vile; despicable; “a dirty (or lousy) trick”; “a filthy traitor”
Source: WordNet® 3.1
Etymology
Adjective
lousy (comparative lousier, superlative lousiest)
Remarkably bad; of poor quality, dirty, or underhanded; mean, contemptible.
Synonym: miserable
Infested with lice.
(colloquial, usually with with) Filled or packed (with something, usually bad).
Synonyms: inundated, jam-packed, teeming
Usage notes
• Considered an offensive insult prior to World War II, implying filthiness. Now considered a mild or rather dated term.
Source: Wiktionary
Lous"y, a.
1. Infested with lice.
2. Mean; contemptible; as, lousy knave. [Vulgar]
Such lousy learning as this is. Bale.
Source: Webster’s Unabridged Dictionary 1913 Edition