high-flown

American  

[hahy-flohn] / ˈhaɪˈfloʊn /

adjective

1. extravagant in aims, pretensions, etc.

2. pretentiously lofty; bombastic.

   We couldn't endure his high-flown oratory.

   Synonyms:

   grandiloquent, magniloquent, flowery, florid

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high-flown British  

adjective

1. extravagant or pretentious in conception or intention

   high-flown ideas

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Etymology

Origin of high-flown

First recorded in 1640–50

Explanation

A person is considered high-flown if he tries to sound smarter or fancier than he really is. The adjective high-flown particularly comes in handy when you're describing overblown, pretentious writing. You can also describe overly lofty plans as high-flown: "The six year-old's intention to build a tree house with wall-to-wall carpeting, electric lights, and plumbing seemed a little high-flown to me."