worth·less /ˈwɝθləs/
  (a.)無價值的,無益的,敗壞的
  Worth·less a.  Destitute of worth; having no value, virtue, excellence, dignity, or the like; undeserving; valueless; useless; vile; mean; as, a worthless garment; a worthless ship; a worthless man or woman; a worthless magistrate.
     'T is a worthless world to win or lose.   --Byron.
  -- Worth*less*ly, adv. -- Worth*less*ness, n.
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  worthless
       adj : lacking in excellence or value; "a worthless idler" [ant: valuable]