• Webster's Revised Unabridged Dictionary
    • Subtilty Cunning; skill; craft. "To learn a lewd man this subtility ."
    • Subtilty Refinement; extreme acuteness; subtlety. "Intelligible discourses are spoiled by too much subtility in nice divisions."
    • Subtilty Slyness in design; artifice; guile; a cunning design or artifice; a trick; subtlety. "O full of all subtility and all mischief."
    • Subtilty The quality or state of being subtile; thinness; fineness; as, the subtility of air or light.
    • ***
Century Dictionary and Cyclopedia
    • n subtilty The state or character of being subtile; thinness; fineness; tenuity: as, the subtilty of air or light; the subtilty of a spider's web. Also subtlety.
    • n subtilty The practice of making fine-drawn distinctions; extreme niceness or refinement of discrimination; intricacy; complexity. Also subtlety.
    • n subtilty Same as subtlety, 4.
    • n subtilty Same as subtlety, 5.
    • n subtilty Skill; skilfulness.
    • n subtilty A delicacy; a carefully contrived dainty.
    • n subtilty An intricate or curious device, symbol, or emblem.
    • ***
Chambers's Twentieth Century Dictionary
    • Subtilty state or quality of being subtile: fineness: extreme acuteness: cunning
    • ***


Webster's Revised Unabridged Dictionary
Contr. fr. subtility,
Chambers's Twentieth Century Dictionary
L. subtilissub, under, tela, a web.


In literature:

How from cunning or subtilty.
"A Practical Directory for Young Christian Females" by Harvey Newcomb
Cardan begins with a definition of Subtilty.
"Jerome Cardan" by William George Waters
But here appears Chaucer's art in all its subtilty.
"A Literary History of the English People" by Jean Jules Jusserand
But thy eyes were too penetrating not to detect the subtilty.
"The Autobiography of Madame Guyon" by Jeanne Marie Bouvier de La Motte Guyon
Learn, however, ... none are so secure but desperation or subtilty may reach them!
"The Works of Lord Byron" by Lord Byron
We are not attempting to perplex a plain matter of science by introducing into its discussion a metaphysical subtilty.
"A Theory of Creation: A Review of 'Vestiges of the Natural History of Creation'" by Francis Bowen
But in both these letters we see the subtilty and caution of the writers.
"The Life of Cicero" by Anthony Trollope
He had begun to dream of glorious subtilties of design and colour.
"Audrey Craven" by May Sinclair
Garnet made a long defence at the bar; and on the question of equivocation he defended himself with much subtilty.
"Guy Fawkes" by Thomas Lathbury
O ye simple, understand subtilty; And, ye fools, be ye of an understanding heart.
"The Bible Story" by Rev. Newton Marshall Hall
But here as everywhere else must we be on our guard against Satan's subtilty and power.
"The Warfare of the Soul" by Shirley C. Hughson
Perhaps, by one of love's subtilties, she has chosen to bid him farewell under the very hawthorn-tree where he had first called her his.
"Doctor Cupid" by Rhoda Broughton
What presence of mind, what subtilty, what truth, in his replies!
"French Classics" by William Cleaver Wilkinson
I must note here the subtilty of this retreat.
"My Path to Atheism" by Annie Besant
Nowhere is subtilty or depth of intuition.
"Recollections and Impressions" by Octavius Brooks Frothingham
Isaac trembled and said: Thy brother has come with subtilty, and taken away thy blessing.
"The History of Antiquity, Vol. I (of VI)" by Max Duncker
What man can pause and charge this senseless dust With fraud, or subtilty, or aught unjust?
"Curious Epitaphs" by Various
I was a fool not to see through the Earl's subtilty before.
"The Weird of the Wentworths, Vol. 1" by Johannes Scotus
I see no reason to qualify this moderation as subtilty, which Mills has not scrupled to do.
"The History of Chivalry" by G. P. R. James
It was a subtilty by which every national engagement might be evaded.
"The Journal of the Debates in the Convention which framed the Constitution of the United States, Volume II (of 2)" by James Madison

In poetry:

Thy will such an intrenching is,
As passeth thought:
To it all strength, all subtilties
Are things of nought.
"The Search" by George Herbert