high-sounding

English Thesaurus

1. pretentious (especially with regard to language or ideals) (adj.all)

similar	:	pretentious,
definition	:	making claim to or creating an appearance of (often undeserved) importance or distinction (adj.all)

domain usage	:	colloquialism,
definition	:	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech (noun.communication)