subtletysub‧tle‧ty /ˈsʌtlti/ 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 understandsubtlety of Some of the subtleties of the language are lost in translation.
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 understandsubtlety of Some of the subtleties of the language are lost in translation.