What is "subtilely"

Subtile \Sub"tile\, a. [L. subtilis. See Subtile.]

1. Thin; not dense or gross; rare; as, subtile air; subtile vapor; a subtile medium.

2. Delicately constituted or constructed; nice; fine; delicate; tenuous; finely woven. ``A sotil [subtile] twine's thread.''
   --Chaucer.

   More subtile web Arachne can not spin.
   --Spenser.

   I do distinguish plain Each subtile line of her immortal face.
   --Sir J. Davies.

3. Acute; piercing; searching.

   The slow disease and subtile pain.
   --Prior.

   5. Characterized by nicety of discrimination; discerning; delicate; refined; subtle. [In this sense now commonly written subtle.]

   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.
   --Coleridge.

   The subtile influence of an intellect like Emerson's.
   --Hawthorne.

   5. Sly; artful; cunning; crafty; subtle; as, a subtile person; a subtile adversary; a subtile scheme. [In this sense now commonly written subtle.]

   Syn: Subtile, Acute.

   Usage: In acute the image is that of a needle's point; in subtile that of a thread spun out to fineness. The acute intellect pierces to its aim; the subtile (or subtle) intellect winds its way through obstacles. [1913 Webster] -- Sub"tile*ly, adv. -- Sub"tile*ness, n.

adv. (obsolete form of subtly English)