nicety

Short definition from Wiktionary

Noun

1. 1
   A small detail or distinction.
2. 2
   Subtlety or precision of use; exactness; preciseness.
3. 3
   Delicacy of character or feeling usually from excessive refinement; fastidiousness
4. 4
   Synonym of social nicety.
5. 5
   That which is delicate to the taste.

Adjective

1. 1
   Behaving in an unpleasant or spiteful way that is seemingly, or perceived as, pleasant or agreeable.