- 1without naturally raised curves (= arches) under the feet
- 2(especially North American English) not prepared for what is going to happen They were caught flat-footed by the attack.
flat-footed
adjectiveBrE BrE//ˌflæt ˈfʊtɪd//; NAmE NAmE//ˌflæt ˈfʊtɪd//
Check pronunciation: flat-footed