godan verb (-ku)
make a commotion; raise a fuss
Describes a noisy, agitated disturbance, often involving multiple people or a single person causing a scene.
隣の部屋で誰かがふためいている。
Someone is making a commotion in the next room.
小さなことでそんなにふためかないでください。
Please don't make such a fuss over a little thing.
騒ぐ is a more common and general word for making noise or being boisterous, while ふためく emphasizes a more agitated, flustered commotion.
The origin is uncertain; it may be related to the mimetic element ふた and the verb-forming suffix めく, but the exact derivation is unclear.