Which term describes a person who is inclined to assert principles as undeniably true?

The term that accurately describes a person who is inclined to assert principles as undeniably true is "dogmatic." This term originates from the concept of dogma, which refers to established beliefs or doctrines that are accepted as the authoritative view without question. A dogmatic person tends to hold onto their beliefs rigidly and often insists that their viewpoint is the only correct one, dismissing alternative perspectives or evidence that contradicts their stance. This characteristic can be seen in various contexts, like religion, politics, or personal ideology, where individuals might assert their beliefs with certainty and inflexibility.

Understanding this term is crucial, especially in fields like law enforcement, where the ability to consider multiple viewpoints and remain open to new information is essential for decision-making and critical thinking. The other terms do not carry the same connotation: indifference implies a lack of interest or concern; eccentric refers to unconventional behavior; and morose signifies a gloomy or sullen disposition. These definitions highlight why "dogmatic" is the most fitting choice for someone who asserts principles as undeniably true.