This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of, from, or resembling the sky: "a sheet of skyey water” ( John Updike).

adj. Resembling the sky.

adj. Of or relating to the sky.

adj. In the sky.

adj. Like the sky; ethereal; being in the sky.

Like the sky, especially as regards color: as, skyey tones or tints.

Proceeding from or pertaining to the sky or the clouds; situated in the sky or upper air.

"Beside our camp, from loosed robe like skyey plain: 479"

ethereal   

upflung    fish-belly    safety-deposit    steel-mesh    sawgrass    corpse-like    safe-deposit    gossamer-like    all-enveloping    low-volume