Gat feet is a colloquial term used to describe someone who walks with a wide, awkward gait. There are several synonyms for this term, including splayfoot, duckfoot, and flatfoot. Splayfoot refers to a condition where the feet point outward, resulting in an awkward walking pattern. Duckfoot is another term used to describe a gait where the feet point outward, resembling the waddle of a duck. Flatfoot, on the other hand, refers to a condition where the arch of the foot is flat, leading to an unsteady gait. While these terms may carry negative connotations, it's important to note that many people with gat feet are perfectly healthy and just walk differently.