くず (translations)→ bilge crap dropping trash
ごみ (translations)→ filth garbage
やくざ者 (translations)→ loon rotter
ろくでなし (translations)→ bastard bum jerk rat screwup shit shithead so-and-so sonuvabitch
怠け者 (translations)→ dawdler idler loafer sleepyhead snail
役立たず (translations)→ blob disservice git queeble useless wanting zilch