sky

1 of 2

noun

ˈskī 

plural skies

1

: the upper atmosphere or expanse of space that constitutes an apparent great vault or arch over the earth

2

: heaven sense 2

3

a

: weather in the upper atmosphere

b

: climate

… temperate English skies …

—G. G. Coulton

sky

2 of 2

verb

skied or skyed; skying

transitive verb

1

chiefly British : to throw or toss up : flip

2

: to hang (something, such as a painting) above the line of vision

3

: to hit (a ball) high into the air

intransitive verb

: to jump high

sky for a rebound

Synonyms of sky

Noun

• blue
• welkin
• skyline
• horizon
• firmament
• heaven(s)

Examples of sky in a Sentence

Noun

There wasn't a cloud in the sky.

Dark clouds moved quickly across the sky.

Hailstones suddenly fell out of the sky.

The sun was high in the sky.

The forecast is for sunny skies tomorrow.

a patch of blue sky

Recent Examples on the Web

Noun

The telescope will be used to observe the radio sky at frequencies below 50 MHz and will measure the low-frequency foreground of the universe. —Richard Tribou, The Orlando Sentinel, 16 Feb. 2026

Mani Peninsula, Greece Stretching south from the Peloponnese, the Mani Peninsula feels defiantly separate from the rest of Greece with its stone tower houses, built for clan defense, rising from a stark landscape of scrub, sea, and sky. —Rob Crossan, Condé Nast Traveler, 16 Feb. 2026

Verb

After the fog lifts this morning, skies across the area will stay cloudy to mostly cloudy. —Steven Sosna, CBS News, 17 Feb. 2026

However, according to the National Weather Service, skies Monday in Punxsutawney will be partly sunny. —Katie Wiseman, IndyStar, 29 Jan. 2026

Word History

Etymology

Noun

Middle English, cloud, sky, from Old Norse skȳ cloud; akin to Old English scēo cloud

First Known Use

Noun

13th century, in the meaning defined at sense 1

Verb

1802, in the meaning defined at transitive sense 1

Phrases Containing sky

• blue sky
• blue-sky law
• deep-sky
• mackerel sky
• pie in the sky
• sky blue
• sky-high
• sky marshal
• sky pilot
• sky wave
• take to the sky/skies
• the sky's the limit

Rhymes for sky

• ai
• aye
• bae
• bi
• buy
• by
• bye
• chai
• chi
• cry
• die
• dry

Kids Definition

sky

noun

ˈskī

plural skies

1

: the upper atmosphere : the vast arch or dome that seems to spread over the earth

2

: heaven sense 2

3

: weather entry 1, climate

the forecast is for sunny skies tomorrow