fog

[1]	dim , obscure , cloud , bedim , becloud , blind , stifle
[2]	befog , obscure , befog , bewilder , mystify , becloud , obnubilate , perplex , confuse , haze over , cloud , muddle , puzzle , mist , nonplus
[3]	fog up/over , mist over/up , cloud up/over , shroud

[1]	mist , haze , smog , vapour , cloud , (Colloq) pea-souper
[2]	trance , fogginess , murk , daze , stupor , murkiness , brown study , confused state , coma
[3]	daze , haze