pertinacious

pertinacious [ pur-tn-EY-shuh’ s ]
	[ adjective ]
	MEANING :
	1. stubborn, obstinate or unyielding 2. resolute or tenacious
	USAGE EXAMPLE 1 :
	Her pertinacious, pro-communist views irked the audience.
	USAGE EXAMPLE 2 :
	In travelling, there is nothing like dissecting people's statements, which are usually coloured by their estimate of the powers or likings of the person spoken to, making all reasonable inquiries, and then pertinaciously but quietly carrying out one's own plans.