hoity toity. when you act all posh and superior.
The colloquial or informal term highfalutin (from high fluting) means pretentious, as with wealth."My aunt has this highfalutin attitude now because she married a wealthy man and has a house in the Hamptons."
Highfalutin
"pompous; bombastic; haughty; pretentious"
pretentious, highfalutin'
That is the correct spelling, although 'hifalutin' is also an acceptable spelling.
Hifalutin, highfalutin or highfaluting is what we call o.o.o. , that is "of obscure origin." It may derive from the participle of the verb flute, as if to mean "self-consciously ornate or elaborate like a complicated flute passage," or perhaps from the other sense of fluting, "decorative parallel grooves."
Alison Jackson has written: 'Desert Rose and her highfalutin hog' -- subject(s): Fiction, Tall tales, Animals
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adjective (Informal) affected, mannered, posh (informal, chiefly Brit.), pretentious, precious, mincing, stuck-up (informal), conceited, snooty (informal), snobbish, too-too, toffee-nosed (slang, chiefly Brit.), highfalutin (informal), arty-farty (informal), overrefined I wouldn't trust them in spite of all their la-di-da manners. Per Collins Thesaurus of the English Language - Complete and Unabridged
This is something that a lot of people wish were true. There is no consistent credible evidence that it is. On the other hand, it is best to remain curious and skeptical rather than to make highfalutin pronouncements on either side of the question. If there is any credibility to some of the claims made on several television programs (and this is a big if) then there may be some people who are sensitive to kinds of information that are not clearly understood. These programs may just be examples of successful entertainment production.
It could be used, yes and would be understandable. Here are some more synonys: assumptive, arrogant, cavalier, chesty, haughty, highfalutin (also hifalutin), high-and-mighty, high-handed, high-hat, huffish, huffy, imperious, important, lofty, lordly, masterful, overweening, peremptory, pompous, presuming, presumptuous, pretentious, self-asserting, self-assertive, sniffy, stiff-necked, supercilious, superior, toplofty (alsotoploftical), uppish, uppity.
In 1973 Bush applied to Harvard Business School with a 2.35 GPA from Yale. 1973 admission statistics are unavailable, but for an incomplete comparison today's Harvard students average a GPA of 3.5 - no students were accepted with a GPA lower than 2.6.