Definition of sky-high in English:

sky-high

adjective & adverb

  • 1As if reaching the sky; very high.

    [as adverb] ‘they saved a president from being blown sky-high’
    high, tall, lofty, elevated, soaring, sky-high, sky-scraping, steep, mountainous, imposing, multistorey
    View synonyms
    1. 1.1At or to a very high level; very great.
      [as adjective] ‘sky-high premiums’

Pronunciation:

sky-high

/ˈˌskī ˈhī/