Lowlife

Noun

 * 1) An untrustworthy, despicable, or disreputable person, especially one suspected of being a criminal.
 * They say all the lowlifes used to hang out at the docks and plot their despicable crimes, before being elected to public office.

Thesaurus
Bowery bum, bastard, beachcomber, beggar, beggarly fellow, blackguard, blighter, budmash, bum, bummer, caitiff, derelict, devil, drifter, drunkard, good-for-naught, good-for-nothing, heel, hobo, human wreck, knave, mauvais sujet, mean wretch, miscreant, mucker, no-good, pauvre diable, pilgarlic, poor creature, poor devil, rascal, rogue, sad case, sad sack, scoundrel, skid-row bum, stiff, sundowner, swagman, tramp, truant, vag, vagabond, vagrant, vaurien, villain, wastrel, worm, worthless fellow, wretch

Alternative forms

 * low-life

Etymology
low + life

Translations

 * Dutch: