1. sky-high - Adjective
2. sky-high - Adverb
Very high.
Source: Webster's dictionaryOne should herd the entire intelligentsia into a mine and then blow it sky-high. Heinrich Müller
The President forgot to mention the Moon, Mars, and the federal deficit - all of which are sky-high. Brad Sherman
he extolled her virtues sky-high Source: Internet
prices have gone sky-high Source: Internet
garbage was piled sky-high Source: Internet
the men were flung sky-high by the explosion Source: Internet