grandiloquent
🇺🇸
/ɡrænˈdɪləkwənt/
🇬🇧
/ɡrænˈdɪləkwənt/
Speaking or writing in a way that is intended to impress with the importance of the speaker or writer, often using long or complicated words.
The grandiloquent speaker tried to impress the audience with his complex vocabulary.