adjective

not considered to be respectable in character or appearance.

he was heavy, grubby, and vaguely disreputable

scandalous,of bad reputation,infamous,notorious,louche,dishonourable,dishonest,villainous,rascally,ignominious,corrupt,unscrupulous,unprincipled,immoral,untrustworthy,discreditable,contemptible,reprehensible,despicable,disgraceful,shameful,shocking,outrageous,unworthy,base,low,mean,questionable,suspect,suspicious,dubious,unsavoury,slippery,seedy,sleazy,seamy,unwholesome,crooked,shady,shifty,fishy,dodgy,scruffy,shabby,slovenly,down at heel,untidy,unkempt,dishevelled,disordered,bedraggled,dilapidated,threadbare,tattered,sloppy