#informant__source  a person who supplies information
  supertype:  communicator  a person who communicates with others
  subtype:  informer__betrayer__rat__squealer__blabber  one who reveals confidential information in return for money
     subtype:  fink__snitch__snitcher__stoolpigeon__stoolie__sneaker__canary  someone acting as an informer or decoy for the police
     subtype:  copper's_nark__nark  (British) an informer or spy working for the police
     subtype:  supergrass  (British) a police informer who implicates many people
  subtype:  leaker  a surreptitious informant; "the president wanted to know who the leakers were"

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