What is ostentatious diction?

Answer 1

It's a fancy term for fancy speaking. Ostentatious means "intended to attract notice" or "characterized by or given to pretentious or conspicuous show in an attempt to impress others." Diction is "a style of speaking or writing as dependent upon choice of words" or "accent, inflection, intonation, and speech sound-quality."

So, ostentatious diction is a flashy, showy manner of speaking.

Answer 2

Ostentatious diction refers to language that is showy, extravagant, or overly elaborate, often used to impress or dazzle the audience. It can come across as pretentious or insincere, as the focus is more on elaborate words and phrases than conveying genuine meaning.