켜켜이

켜켜이 + 쌓이다 / 쌓다

layer upon layer, in thick layers

Example

책상 위에 먼지가 켜켜이 쌓여 있어요.

Dust has piled up in layers on the desk.

Word parts

켜 'layer' doubled + -이 makes an adverb.

Related words