1. The act of stomping around loudly.
2. The act of kicking something hard with the bottom of your foot.
1. Damn that guy upstairs is thuderfooting around.
2. That asshole at the bar got the thunderfooting of his life.
Alternatively known as 7-pointering, flattening, or crushing, thunderfooting refers to the LoU gameplay action of utterly and completely destroying your opponent's castle, all of his troops and buildings and thoroughly suppressing his will to oppose you.
TB's hobby is thunderfooting our enemies.
Let's get TB to thunderfoot them.