subtlety

As a noun subtlety

is (uncountable) the quality or fact of being subtle.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As nouns the difference between subtilty and subtlety

is that subtilty is (archaic) subtlety while subtlety is (uncountable) the quality or fact of being subtle.

As a noun subtlety

is (uncountable) the quality or fact of being subtle.

As an adjective undefined is

lacking a definition or value.

As a noun subtlety

is (uncountable) the quality or fact of being subtle.

As an adjective nuances is

.

As nouns the difference between subtlety and subtility

is that subtlety is (uncountable) the quality or fact of being subtle while subtility is (obsolete) cunning, craftiness.

As nouns the difference between craftiness and subtlety

is that craftiness is skill in deception, slyness while subtlety is (uncountable) the quality or fact of being subtle.

As a noun subtlety

is (uncountable) the quality or fact of being subtle.

As an adjective sense is

sensible, rational.

Subtlety is a related term of genius.

As nouns the difference between subtlety and genius

is that subtlety is (uncountable) the quality or fact of being subtle while genius is genius (extraordinary mental capacity).

Acuteness is a synonym of subtlety.

As nouns the difference between acuteness and subtlety

is that acuteness is the quality of being acute or pointed; as, the acuteness of an angle while subtlety is (uncountable) the quality or fact of being subtle.

As nouns the difference between subtlety and refinement

is that subtlety is (uncountable) the quality or fact of being subtle while refinement is the act, or the result of refining; the removal of impurities, or a purified material.