Flat-footed

Adjective

adjective

1. having feet which are flat''Bears are flat-footed animals.
2. ( of humans) having the specific physical condition of flat feet
3. (idiomatic) unprepared to act''They caught us flat-footed.
4. Holding firmly and maintaining a decision; to standing on one's ground.1892 Frank Millet: "I write in this way to urge you to be explicit and flat-footed in your wishes." Quoted in: 2003 Erik Larson, '', ISBN 0609608444, page 177.