nicety
/ˈnaɪsɪti/
A small detail or distinction.
We met the new captain while we were taking enemy fire and were unable to observe the niceties of formal introductions.
Subtlety or precision of use.
A rocket-propelled grenade doesn't have the nicety of a sniper round, but you must admit its effectiveness.
Delicacy of character or feeling usually from excessive refinement; fastidiousness
That which is delicate to the taste.