dogmatism Play nounThe tendency to lay down principles as undeniably true, without consideration of evidence or the opinions of others. SYNONYMS arroganceassertivenessauthoritarianismbigotrydictatorialnessdoctrinairismentrenchmenthigh-handednessimperativenessimperiousnessinflexibilityintolerancenarrow-mindednessopinionatednessperemptorinessrigiditysmall-mindedness