flat-footed (Adjective) — With feet flat on the ground; not tiptoe.
flat-footed (Adjective) — Unprepared and unable to react quickly. ex. "the new product caught their competitors flat-footed"
flat-footed (Adjective) — Having broad flat feet that usually turn outward. ex. "a slow flat-footed walk"
flat-footed (Adjective) — Without reservation. ex. "a flat-footed refusal"