discreditable tending to bring discredit or disrepute; blameworthy; "his marks were not at all discreditable"
damaged,
discredited harmed or injured or spoiled; "I won't buy damaged goods"; "the storm left a wake of badly damaged buildings"
ill-famed,
infamous,
notorious known widely and usually unfavorably; "a notorious gangster"; "the tenderloin district was notorious for vice"; "the infamous Benedict Arnold";
louche,
shady of questionable taste or morality; "a louche nightclub"; "a louche painting"
