1 : unclear in form or expression; "the blurred aims of the group"; "sometimes one understood clearly and sometimes the meaning was clouded"- H.G.Wells
2 : lacking definite form or limits; "gropes among cloudy issues toward a feeble conclusion"- H.T.Moore; "nebulous distinction between pride and conceit"
3 : lacking clarity or distinctness; "a dim figure in the distance"; "only a faint recollection"; "shadowy figures in the gloom"; "saw a vague outline of a building through the fog"; "a few wispy memories of childhood"