IPA: /ˈflætˌfʊtɪd/
KK: /ˈflætˌfʊtɪd/
Describing someone who is unprepared or unable to react quickly, or having feet that are flat instead of arched.
He felt flatfooted when asked to give a speech without any notice.
Flatfooted → It is formed from "flat" (from Old English *flet*, meaning level or even) and "footed" (from the root "foot" which comes from Old English *fōt*, meaning the lower extremity of the leg). The word "flatfooted" describes someone with flat feet or lacking an arch in the foot, often implying clumsiness or inability to move quickly.
Think of someone with "flat" feet who may not be able to move quickly or gracefully, which helps you remember that "flatfooted" refers to being clumsy or slow.