Obdurate

Obdurate [ OB-doo-rit, -dyoo’- ]
	[ adjective ]
	MEANING :
	1. unmoved by persuasion, pity, or tender feelings; stubborn; unyielding. 2. stubbornly resistant to moral influence; persistently impenitent
	USAGE EXAMPLE 1 :
	For all his reputation as a pragmatist, there's a steely and obdurate side to him that comes to the surface every so often