subtle

For those who have a problem with that, she offered a charming, subtle middle finger.

He thought her very lovely, and there was a subtle suggestion of something besides loveliness.

The arm of the Inquisition was long, its watch was vigilant, and its weapons were subtle.

Instead of a sensible and wary man, we call him a disguised and subtle fellow.

And then the continual effort to degrade the Mass, to rob it of its mystery and holy character—it's clever, it's subtle.

"Under the Cedars" was fresh and bright, full of imagination and that subtle power which touches the commonplace with interest.