1) Awful 2) British slang for miserly 3) Crappy 4) Cruddy 5) Crummy 6) Despicable 7) Full of bugs 8) God-awful 9) Icky 10) Infested with lice 11) Just awful 12) Just dreadful 13) Meriting no stars 14) Miserable 15) Necessitating nitpicking 16) No good 17) Not worth a darn 18) Pretty bad 19) Punk 20) Real bad Found on https://www.crosswordclues.com/clue/lousy
Lous'y adjective 1. Infested with lice. 2. Mean; contemptible; as, lousy knave. [ Vulgar] « Such lousy learning as this is.» Bale. Found on http://www.encyclo.co.uk/webster/L/64
infested with lice. · That was a lousy thing to do. · mean or contemptible:That was a lousy thing to do. · wretchedly bad; miserable:a lousy job; I feel lousy. Found on https://www.infoplease.com/dictionary/lousy