high-flown

(s) pretentious (especially with regard to language or ideals)
- high-flown talk of preserving the moral tone of the school
- a high-sounding dissertation on the means to attain social revolution
high-sounding, inflated,
(s) of high moral or intellectual value; elevated in nature or style
- an exalted ideal
- "argue in terms of high-flown ideals"- Oliver Franks
- a noble and lofty concept
- a grand purpose
exalted, high-minded, lofty, noble-minded, elevated, idealistic, rarefied, rarified, sublime, grand,

high-sounding inflated exalted high-minded lofty noble-minded elevated idealistic rarefied rarified sublime grand