The term 'ne'er-do-well' is used to describe someone who is lazy, irresponsible, and generally not a productive member of society. This term can be broken down into several synonyms, such as CAD (3 letters), WASTREL (7 letters), REPROBATE (9 letters), LOSER (5 letters), KNAVE (5 letters), WASTER (6 letters), IDLER (5 letters), BUM (3 letters), CUR (3 letters), ROGUE (5 letters), SCAMP (5 letters), SLOUCH (6 letters), SLACKER (7 letters), badapple (8 letters), SCALAWAG (8 letters), SHIFTLESS (9 letters), and blacksheep (10 letters). All of these words are used to describe someone who is not living up to their potential and is not contributing to society in a meaningful way.