pompous
/ˈpɑːmpəs/
adjective
Britannica Dictionary definition of POMPOUS
[more pompous; most pompous]
disapproving
:
having or showing the attitude of people who speak and behave in a very formal and serious way because they believe that they are better, smarter, or more important than other people
— pomposity
/ˌpɑːmˈpɑːsəti/
noun,
plural
pomposities