Meaning of “pompous” - Learner’s Dictionary

pompous

adjective uk us /ˈpɒmpəs/

Someone who is pompous is too serious and thinks they are more important than they really are.

pompously adverb
pomposity uk us /pɒmˈpɒsəti/ noun [ U ]

pompous behaviour or speech

(Definition of “pompous” from the Cambridge Learner’s Dictionary © Cambridge University Press)