This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Subtlety

n. The quality or state of being subtile; thinness; fineness.

n. Refinement; extreme acuteness; subtlety.

n. Cunning; skill; craft.

n. Slyness in design; artifice; guile; a cunning design or artifice; a trick; subtlety.

n. 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. The practice of making fine-drawn distinctions; extreme niceness or refinement of discrimination; intricacy; complexity. Also subtlety.

n. Same as subtlety, 4.

n. Same as subtlety, 5.

n. Skill; skilfulness.

n. A delicacy; a carefully contrived dainty.

n. An intricate or curious device, symbol, or emblem.

"That is the heart and soul of the Constitutional structure, and what makes it unique among such documents in the world, so much so that widely different minds, from Ho Chi Minh to Kurt Goedel, appreciated its cunning and structural subtilty."

thinness    fineness    refinement    subtlety    cunning   

subtlety    adroitness    nimbleness    minuteness    artifice