두꺼워요 · 두꺼웠어요 · 두꺼운 (+noun) (ㅂ irregular)
to be thick (of flat objects)
Example
밖이 추우니까 두꺼운 옷을 입으세요.
It's cold outside, so wear thick clothes.
Good to know
For books, clothes and paper; for thick soup or color use 진하다, for thick fingers use 굵다.
Related words