#1
subtlety n. [
nuance, nicety, shade, refinement] a subtle difference in meaning or opinion or attitude; "without understanding the finer nuances you can't enjoy the humor"; "don't argue about shades of meaning"
. wn #2
subtlety n. [
niceness] the quality of being difficult to detect or analyze; "you had to admire the subtlety of the distinctions he drew"
. wn