The Collaborative International Dictionary of English v.0.48:

Jesuitic \Jes`u*it"ic\, Jesuitical \Jes`u*it"ic*al\, a. [Cf. F.
   j['e]suitique.]
   [1913 Webster]
   1. Of or pertaining to the Jesuits, or to their principles
      and methods.
      [1913 Webster]

   2. Designing; cunning; deceitful; crafty; -- an opprobrious
      use of the word. --Dryden.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Jesuitical
    adj 1: having qualities characteristic of Jesuits or Jesuitism;
           "Jesuitical education" [syn: Jesuitical, Jesuitic,
           Jesuit]

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "jesuitical":
   apparently sound, casuistic, colorable, deceptive, dishonest,
   disingenuous, empty, fallacious, hollow, illusive, insincere,
   jesuitic, mealymouthed, overrefined, oversubtle, philosophistic,
   plausible, sophistic, sophistical, specious, tongue in cheek,
   uncandid, unfrank, unserious