Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
flatfooted is an adjective meaning "unprepared and unable to react quickly". It carries 4 recorded senses.
unprepared and unable to react quickly
“the new product caught their competitors flat-footed”
having broad flat feet that usually turn outward
“a slow flat-footed walk”
with feet flat on the ground; not tiptoe
Definitions, synonyms and semantic relations for flatfooted come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.