cloudy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Full of or covered with clouds; overcast.
• adjective Of or like a cloud or clouds.
• adjective Marked with indistinct masses or streaks.
• adjective Not transparent, as certain liquids.
• adjective Open to more than one interpretation.
• adjective Not clearly perceived or perceptible.
• adjective Troubled; gloomy.

from The Century Dictionary.

• Overcast with clouds; obscured by clouds: as, a cloudy day; a cloudy sky.
• Consisting of a cloud or clouds; of the nature of a cloud.
• Obscure; dark; not easily understood.
• Having the appearance of gloom; indicating gloom, anxiety, sullenness, or ill nature; not open or cheerful.
• Marked with spots or areas of dark or various hues, or by clouding or a blending of light and shade or of colors.
• Wanting in luster, brightness, transparency, or clearness; dimmed: as, a cloudy diamond.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Overcast or obscured with clouds; clouded; as, a cloudy sky.
• adjective Consisting of a cloud or clouds.
• adjective Indicating gloom, anxiety, sullenness, or ill-nature; not open or cheerful.
• adjective Confused; indistinct; obscure; dark.
• adjective Lacking clearness, brightness, or luster.
• adjective Marked with veins or sports of dark or various hues, as marble.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Covered with or characterised by clouds; overcast.
• adjective Not transparent or clear.
• adjective Uncertain; unclear.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective lacking definite form or limits
• adjective (of liquids) clouded as with sediment
• adjective full of or covered with clouds