superfine

Short definition from Wiktionary

Adjective

1. 1
   Extremely subtle or refined; extremely sensitive to slight impressions or perceptions.
2. 2
   Extremely refined or sophisticated; very elegant.
3. 3
   Having an especially fine size or texture; made of very small particles or threads.
4. 4
   Of a very high or pure grade or quality.
5. 5
   Very good, excellent.