This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Stiffly or artificially formal; stiff.

adj. Architecture Having some vertical length between the impost and the beginning of the curve. Used of an arch.

adj. stiff and artificially formal

adj. pompous

adj. Supported by stilts.

adj. Elevated as if on stilts; hence, pompous; bombastic

Elevated, as if on stilts; hence, pompous; inflated; formal; stiff and bombastic: said especially of language: as, a stilted mode of expression; a stilted style.

adj. artificially formal

"If you look at their NASA Message Construct all you get are partial, generic ideas contained in stilted sentences - including what to say in a proverbial "Elevator Speech" with someone (I am guessing here) who wants to know what NASA does."

affected    unnatural   

stilted arch   

stiltedly    stiltedness   

bombastic   

stilt   

jilted    quilted    tilted    wilted   

melodramatic    self-conscious    high-flown    bombastic    grandiose    pedantic    archaic    inflate    frigid    jerky