形容词

1. 夸夸其谈的；大话连篇的；词藻华丽空洞的
If you describe someone as bombastic, you are criticizing them for trying to impress other people by saying things that sound impressive but have little meaning.

1. ostentatiously lofty in style

e.g. a man given to large talk
tumid political prose

Synonym: declamatorylargeorotundtumidturgid