
Bombast
Insincere Grandiloquence
Bombast refers to speaking or writing that's pompous, showing off with fancy words without sincerity. 
Negative Connotation
Using bombast carries a negative implication that the speaker is trying to deceive or impress falsely. 
Overly Dramatic
Bombast can be seen as overly dramatic or theatrical in a way that can seem ridiculous. 