stratospheric

stratosphere +‎ -ic

• IPA^(key): /ˌstɹætəsˈfɛɹɪk/
• Rhymes: -ɛrɪk

stratospheric (comparative more stratospheric, superlative most stratospheric)

1. of or relating to the stratosphere
2. (by extension) unusually or unreasonably high

   The hotel charged stratospheric prices for a simple cooked breakfast.

   • 2019 February 5, Oliver Wainwright, “Super-tall, super-skinny, super-expensive: the 'pencil towers' of New York's super-rich”, in The Guardian‎:

     The continued volatility of financial markets has spurred buyers to seek safe havens in super-prime real estate, from London to New York and Hong Kong, begetting stratospheric prices and minting a whole new category that defies the usual rules of the marketplace: the “trophy property”.