sky-high

from WordNet (r) 3.0 (2006)

sky-high
    adv 1: (with verb `to blow') destroyed completely; blown apart
           or to pieces; "they blew the bridge sky-high"; "the
           committee blew the thesis sky-high"
    2: in a lavish or enthusiastic manner; "he extolled her virtues
       sky-high" [syn: {sky-high}, {enthusiastically}]
    3: to a very high level; "prices have gone sky-high"; "garbage
       was piled sky-high"; "the men were flung sky-high by the
       explosion"

from The Collaborative International Dictionary of English v.0.48

Sky-high \Sky"-high`\, adv. & a.
   Very high. [Colloq.]
   [1913 Webster]