Added 9 October 2026 cloudiness noun Categories: Describing WordsRare Words noun ! Definition from WordNet 3.1, Princeton University. More about cloudiness at Wordnik → Where our words come from → The state of the sky when it is covered by clouds. Gloomy semidarkness caused by cloud cover. The quality of being cloudy. Related Words: muddinessmurkinessovercastturbiditycloudgradualamountcloudageovercastnessturbidnessnebulosity Back to today's word