1) Biased 2) Bigoted 3) Dogmatic 4) Egotistic 5) Opinionative 6) Opinioned 7) Partisan 8) Prejudiced 9) Supporting 1) Conceitedly dogmatic 2) Dogmatic 3) Highly dogmatic 4) Like critics 5) Narrow 6) Narrow-minded 7) Obstinate in your opinions 8) Opinionative 9) Self-opinionated 
• (a.) Stiff in opinion; firmly or unduly adhering to one`s own opinion or to preconceived notions; obstinate in opinion.
O·pin'ion·a`ted adjective Stiff in opinion; firmly or unduly adhering to one's own opinion or to preconceived notions; obstinate in opinion. Sir W. Scott. 
[adj] - obstinate in your opinions
opinionated 1. Being obstinate or stubbornly persistent in one's viewpoint. 2. Always ready to express opinions and tending to hold to them stubbornly, unreasonably dismissing other people's views. 3. Holding stubbornly and often unreasonably to one's own opinions; conceitedly dogmatic.
opinionative adjective obstinate in your opinions
obstinate or conceited with regard to the merit of one's own opinions; conceitedly dogmatic.