Pontificator is a term used to describe someone who is largely opinionated and arrogant about their views or beliefs. Interestingly, there are multiple synonyms that may alternatively fit such a description. For instance, one may consider substituting the term with "dogmatist" to account for people who impose their principles on others with little or no consideration. Alternatively, "preachy" may be apt to describe someone who is excessively inclined to give unsolicited advice to others. Also, "know-it-all" could be used to describe someone who believes they are more informed on matters than others. In simpler words, pontificator can also be described as a person who is overly opinionated, imposing, preachy, or arrogant.