DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   sinful
       adj 1: characterized by iniquity; wicked because it is believed
              to be a sin; "iniquitous deeds"; "he said it was sinful
              to wear lipstick"; "ungodly acts" [syn: iniquitous,
              sinful, ungodly]
       2: having committed unrighteous acts; "a sinful person" [syn:
          sinful, unholy, wicked]
       3: far more than usual or expected; "an extraordinary desire for
          approval"; "it was an over-the-top experience" [syn:
          extraordinary, over-the-top, sinful]