優婉[yuuen] elegant
婉曲[enkyoku] euphemistic
婉美[enbi] beauty
婉曲迂遠[enkyokuuen] being euphemistic and circumlocutory
婉然[enzen] graceful

婉曲表現[enkyokuhyougen] euphemism
婉曲法[enkyokuhou] euphemism
柔婉[juuen] simple
幽婉[yuuen] modest and beautiful