dogmatical

Stubbornly asserting beliefs

Dogmatical is an older or more formal variant of dogmatic, meaning asserting opinions as if they were established facts, brooking no disagreement.

He grew more dogmatical as the evening wore on, dismissing any view but his own.

The extra syllable lends a slightly archaic or emphatic quality.

obstinate

stubborn

Refusing to change course

unbending · obstinate · intransigent · adamant · immovable · uncompromising · pigheaded · bullheaded · headstrong · willful

zealous

ideologue

Dogmatic political advocate

extremist · hardliner · partisan · sectarian · purist · proselytizer · evangelist · preacher · doctrinaire · orthodox

authoritative

doctrine

Established body of teachings

precept · canonical · axiomatic · gospel · dictum · edict · decree · fiat · mandate · pronouncement

Opposites
intellectual flexibility

dogmaticalopen-minded

Receptive to different ideas

broad-minded · flexible · tolerant · receptive · undogmatic

epistemic humility

dogmaticalskeptical

Inclined to question claims

questioning · tentative · humble · agnostic · doubtful

Phrases
Family

dogmatic, undogmatic, dogmatically

Familiarity
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Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G