Back on point, "naughty" annoys me, too. Chinese think a "naughty child" is ke ai (cute).
In my Christmas lesson, I teach them Santa's dictum: "You better watch out who's naughty or nice, Santa Claus is coming to town." And going to give ""naughty" children a lump of coal in their stocking. This is the first time my students hear/understand that westerners don't consider "naughty" children to be cute.
I consider naughty to be a cute word.