Dogmatism conveys a sense of unquestionable certainty by the speaker about their beliefs. His dogmatism leaves no room for debate.
Pro Tip 2/3
Negative Connotation
Dogmatism usually has a negative connotation, suggesting stubbornness and closed-mindedness. Despite evidence to the contrary, her dogmatism was unwavering.
Pro Tip 3/3
Discouraging Dialogue
Use 'dogmatism' when describing a situation where a person's firm stance stifles conversation or questioning. The manager's dogmatism shut down any further discussion.