Learn That Word

Synonyms for High-flown (same or very similar meaning)

WordNet sense 1 (pretentious (especially with regard to language or ideals)):
high-sounding

WordNet sense 2 (making claim to or creating an appearance of (often undeserved) importance or distinction):
pretentious

WordNet sense 3 (of high moral or intellectual value; elevated in nature or style):
high-minded

WordNet sense 4 (having or showing or indicative of high or elevated character):
noble


From the ODE community, based on WordNetadd/edit