[adjective] lacking definite form or limits; "gropes among cloudy issues toward a feeble conclusion"- H.T.Moore; "nebulous distinction between pride and conceit" Synonyms:nebulose, nebulous
[adjective] (of especially liquids) clouded as with sediment; "a cloudy liquid"; "muddy coffee"; "murky waters" Synonyms:muddy, mirky, murky, turbid
[adjective] full of or covered with clouds; "cloudy skies"