The Collaborative International Dictionary of English v.0.48:
Cloudiness \Cloud"i*ness\, n. The state of being cloudy. [1913 Webster]WordNet (r) 3.0 (2006):
cloudiness n 1: the state of the sky when it is covered by clouds [syn: cloudiness, cloud cover, overcast] 2: gloomy semidarkness caused by cloud cover [syn: cloudiness, overcast] 3: the quality of being cloudy [syn: cloudiness, murkiness, muddiness]