SUBTILELY
Etymology
Adverb
subtilely (comparative more subtilely, superlative most subtilely)
Obsolete form of subtly.
Source: Wiktionary
SUBTILE
Sub"tile, a. Etym: [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. 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.
– Sub"tile*ly, adv.
– Sub"tile*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition