Dogmatic (9)
There are a few possibilities for this:
assertive
'dogmatic' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for doctrinaire that I've seen before include "Seeking to impose a view" , "Trying to impose beliefs" , "Dogmatic" , "Inflexible in applying theory" , "Opinionated" .)
'dogmatic' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for opinionated that I've seen before include "Assertively dogmatic" , "Doctrinaire" , "Assertive in one's views" .)
'dogmatic' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for assertive that I've seen before include "Forcefully confident" , "Positive, dogmatic" , "Forthright, demanding" , "Forceful, dogmatic" , "Positive and outspoken" .)