godan verb (-ku), intransitive verb
Describes smoke, clouds, mist, or haze stretching out horizontally or hanging in the air. Also used poetically for hair flowing in the wind or a lingering feeling.
山のふもとに霧がたなびいていた。
Mist was hanging over the foot of the mountain.
The smoke trailed in the wind and drifted far away.
彼女の長い髪が風にたなびいていた。
Her long hair was flowing in the wind.