Definitions for Casuistˈkæʒ u ɪst
Random House Webster's College Dictionary
cas•u•istˈkæʒ u ɪst(n.)
an oversubtle or disingenuous reasoner.
a person who applies ethical principles to particular cases of conscience or conduct.
Origin of casuist:
1600–10; < Sp casuista < L cāsu(s)case1
someone whose reasoning is subtle and often specious
A person who resolves cases of conscience or moral duty.
Someone who attempts to specify exact and precise rules for the direction of every circumstance of behavior
Origin: Directly or via casuiste, from casuista, from casus
one who is skilled in, or given to, casuistry
to play the casuist