To walk around in the course of work, especially when investigating.
To dance in the style of Appalachian clogging.
To gulp an entire drink (bottle, glass, can, etc.) without pausing between swallows.
To perform an action inefficiently or awkwardly.
To wrongfoot.
Having flat feet.
Blunt and unsubtle; lacking finesse.
Unprepared to respond; unready.
They were caught flatfooted when Clancy filed to enter the race.
Putting the entire foot down at once, rather than landing on the ball of the foot and then lowering the rest of the foot.
With one's feet flat on the ground.
(of drinking) Without pausing between swallows.