More subtile web Arachne can not spin.

I do distinguish plain
Each subtile line of her immortal face.

The slow disease and subtile pain.

The genius of the Spanish people is exquisitely subtile, without being at all acute; hence there is so much humor and so little wit in their literature. The genius of the Italians, on the contrary, is acute, profound, and sensual, but not subtile; hence what they think to be humorous, is merely witty.

The subtile influence of an intellect like Emerson's.