Synonyms for Sky:

adj.

empyrean (adjective)
celestial.
heavenly (adjective)
empyrean.

n.

kick, play, cross, shoot, knock, pass, smash, dribble, hook, strike at. heaven, temperate, high, seasonal, air, spell, climatic, firmament, barometer, weather, climate, welkin, meteorology, zone, weather forecast. moonlight, the firmament, the Aurora Australis, moonbeam, the horizon, the Aurora Borealis, heavenly, celestial, the Northern Lights. air (noun)
welkin.
atmosphere (noun)
air.
earth's atmosphere (noun)
empyrean, the blue, azure, firmament, welkin.
firmament (noun)
azure, atmosphere, the heavens, air, welkin, the blue, heaven, empyrean.
heaven (noun)
atmosphere, firmament.
sky (noun)
flip, toss, pitch.
welkin (noun)
heaven.

Other synonyms:

air, welkin, heaven. sky
firmament.
Other relevant words:
heaven, heavenly, air, climate, zone, azure, knock, pass, hook, play, weather, firmament, climatic, meteorology, welkin, spell, seasonal, moonbeam, smash, celestial, barometer, kick, temperate, dribble, atmosphere, moonlight, empyrean, cross, high, the blue, shoot.

Usage examples for sky

  1. I went to the door and looked out at the gray, angry sky – Not Pretty, But Precious by John Hay, et al.
  2. Then she looked up, over the black trees, to the sky with its white moon and its few great stars. – The Cow Puncher by Robert J. C. Stead
  3. Not a very cheerful view,- just the plain and the sky but he liked it. – The Little Lame Prince And: The Invisible Prince; Prince Cherry; The Prince With The Nose The Frog-Prince; Clever Alice by Miss Mulock--Pseudonym of Maria Dinah Craik