뒤집다

Etymology
The first element is from Middle Korean "to flip", but the second element is not clear. Yi Hyeon-jeong notes that or  are both a passable semantic match, but that neither form is compatible with -딥다. As the palatalization of to  was ongoing in 1766 and both forms are attested in the same text, Yi speculates that 뒤딥다 is a result of hypercorrection by the writer.

Verb

 * 1)  to invert, to flip an object, such as a pancake on a hot skillet
 * 2)  to turn upside down, to capsize a floating vessel, from rowboats to ships, of any size
 * 3)  to reverse, to turn inside-out