Fog

мгла

mgla

(cloud that forms at a low altitude and obscures vision)

тума́н

tumán

(cloud that forms at a low altitude and obscures vision)

запотева́ть

zapotevátʹ

(to become obscured in condensation or water)

затума́нивать

zatumánivatʹ

(to cover with or as if with fog)

затума́ниваться

zatumánivatʹsja

(to become covered with or as if with fog)