WordNet sense 1 (of relatively small extent from one surface to the opposite or in cross section):

thin

WordNet sense 2 (of very poor quality; flimsy):

bum, cheap, cheesy, chintzy, crummy, punk, tinny

WordNet sense 3 (of low or inferior quality):

inferior

WordNet sense 4 (morally degraded):

seamy, seedy, sordid, squalid

WordNet sense 5 (lacking respectability in character or behavior or appearance):

disreputable