subtle

他找到了一个巧妙的方法来解决这个问题。

He found a ___subtle way to solve the problem.

她巧妙的暗示没有被大多数人注意到。

Her ___subtle hint went unnoticed by most people.

我被这幅画微妙的色彩运用所吸引。

I was drawn to the painting’s ___subtle use of color.