Pretentious is synonymous to C. SHOWY.
You are pretentious when you attempt to impress people by affecting greater importance or talent than is actually possessed.
Other synonyms of pretentious aside from showy are:
ostentatious, overambitious, pompous, grandiose, extravagant, flamboyant, overblown, magniloquent, and many more.
absurd is synonymous to foolish or unreasonable
argumentative is synonymous to quarrelsome, contrary
annoyed is synonymous to irritated, irk