[ adjective ] with feet flat on the ground; not tiptoe
Used in print(Samuel Elkin, "The Ball Player," Nugget, 6: 5...)
He stood flat-footed in the box , but not very close to the plate now .
[ adjective ] unprepared and unable to react quickly
"the new product caught their competitors flat-footed"
[ adjective ] having broad flat feet that usually turn outward
"a slow flat-footed walk"