planned on an impressive scale (often foolishly)

theatrical, extravagant

a style of a language full of technical or special words

specialized language; dialect

full of, showing (too much) self-importance

arrogant, egotistic

to use loud, boasting language

yelling, raving

an enthusiastic expression of delight (in speech, poetry etc)

yelling, raving

(the art, theory, of) presenting facts and ideas in clear and convincing language; exaggerated, insincere language

wordiness; long speech

using, containing, more words than are needed

wordy, long-winded