webster paranoia
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para.noia \.par-*-'noi-*\ n [NL, fr. Gk, madness, fr. paranous demented, fr. 
  para- + nous mind]  1 : a rare chronic psychosis characterized by 
  systematized delusions of persecution or of grandeur usu. not associated with
  hallucinations  2 : a tendency on the part of individuals or of groups toward
  excessive or irrational suspiciousness and distrustfulness of others -- 
                  .          .
  para.noi.ac \-'noi-.ak, -'noi-ik\ adj or n 

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