[flat-foot.ed] adj (1601) 1: affected with flatfoot; broadly: walking with a dragging or shambling gait
2. a: firm and well balanced on the feet b: free from reservation: forthright "had an honest ~ way of saying a thing"
3: not ready: unprepared--used chiefly in the phrase catch one flat-footed
4: proceeding in a plodding or unimaginative way: pedestrian "~ prose" -- flat-foot.ed.ly adv -- flat-foot.ed.ness n
[2]flat-footed adv (1828) 1: in an open and determined manner: flatly
2: with the feet flat on a surface (as the ground)