덜

In a sentence

• 나는 덜 익은 사과를 먹었다.

  I ate an unripe apple.

  The word '덜' indicates 'less', here specifying the apple is 'less ripe' or 'unripe'.

• 덜 중요한 과제를 나중에 끝냈다.

  I finished the less important assignment later.

  The word '덜' is used to convey 'less' as in 'less important', modifying 'important'.

• 그는 문제를 덜 복잡하게 설명했다.

  He explained the problem in a less complicated way.

  Here, '덜' serves to mean 'less', qualifying 'complicated'.