Obdurate Ob Duh Rit Dyuh Adjective Stubborn Easily Moved Hard Hearted

1. Stubborn: not easily moved.

2. Hard-hearted: resistant to emotions. 

From Latin obdurare (to harden), from durus (hard). Ultimately from the Indo-European root deru- (to be firm) that's the source of such other words as truth, trust, betroth, tree, endure, druid, during, durable, duress, trow, and indurate.]

"The White Paper outlines no strategy to end government's obdurate resistance to proper pricing of passenger services." - Raghu Dayal; Whither is Fled, Railways' Visionary Gleam? The Economic Times (New Delhi, India); Feb 23, 2010.