Source : Webster's Revised Unabridged Dictionary (1913)

Casuistic \Cas`u*is"tic\, Casuistieal \Cas`u*is"tie*al\, a.
   Of or pertaining to casuists or casuistry.

Source : WordNet®

casuistic
     adj 1: of or relating to or practicing casuistry; "overly subtle
            casuistic reasoning" [syn: {casuistical}]
     2: of or relating to the use of ethical principles to resolve
        moral problems [syn: {casuistical}]