cloudless

Preposition: by

• midnight: Sky virtually cloudless by midnight with an exceptionally brilliant Hale-Bopp comet - two tails visible ( the second very faint ).

Modifies a noun

• sky: The sun was just still shining out into the cloudless azure sky, just sinking lower ahead of me, dazzling in my eyes.
• days.: There seems to be plenty of calm, cloudless days. The school holidays are over but the weather stays sunny.
• morning: Hard to believe a similarly cloudless morning only sixteen days earlier had been white with frost.
• night: On a dark, cloudless night you will see thousands of stars in the sky.
• day: He will never take s down his umbrella, even on a cloudless day.
• blue: High in the cloudless blue he saw three silvery objects moving in a V formation.

Modifying Another Word

• almost: The weather improved through the week and by mid-day on Thursday the sun was shining from an almost cloudless sky.
• virtually: We had a number of days during the tour which began clear but soon clouded up; today remained virtually cloudless all day.
• mostly: Weather During our 2-week holiday, apart from 1 day, we had mostly cloudless skies, and temperatures were generally in the 80's.
• otherwise: It was 0200 and they awoke to a shining moon in an otherwise cloudless and windless sky.

Used with adjective complement

• become: The clouds were at their maximum around noon and then began to disperse in the afternoon becoming almost cloudless by evening.