sub ‧ tle ‧ ty /ˈsʌtlti/ BrE AmE noun ( plural subtleties )
1 . [uncountable] the quality that something has when it has been done in a clever or skilful way, with careful attention to small details:
The play lacks subtlety.
She argued her case with considerable subtlety.
2 . [countable usually plural] a thought, idea, or detail that is important but difficult to notice or understand
subtlety of
Some of the subtleties of the language are lost in translation.