cloudless

American  

[kloud-lis] / ˈklaʊd lɪs /

adjective

1. having no clouds; clear.

   a cloudless sky.

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Other Word Forms

• cloudlessly adverb
• cloudlessness noun

Etymology

Origin of cloudless

1350–1400; Middle English. See cloud, -less

Explanation

Cloudless means bright and clear, like the blue, cloudless sky you're hoping for on the day of the big back-to-school picnic. When you look up and don't see a single cloud, you can describe the sky as cloudless. Cloudless skies mean no rain, no haze, and no fog. In the daytime, a cloudless sky is blue and bright, and a cloudless night sky is perfect for stargazing through a telescope. This adjective is formed by adding the suffix -less, "lacking," to cloud.

Example Sentences

Jaxson Dart, drafted by the Giants 25th overall last spring, made an unforgettable starting debut by knocking off the sluggish Chargers, 21-18, on a cloudless day at MetLife Stadium.

From Los Angeles Times • Sep. 28, 2025

"Clear air" turbulence is, as the name suggests, cloudless and cannot be seen.

From BBC • May 22, 2024

I'll be the first to admit that I quickly took to Google after Gadd's cloudless admission in the first episode's opening that "this is a true story," keen to learn more.

From Salon • Apr. 24, 2024

They’re following weather reports closely, praying for cloudless skies.

From New York Times • Apr. 6, 2024

The water below is a deep, rippling blue; the sky above is pale and pretty and cloudless.

From "The Sea in Winter" by Christine Day