superfine

1. Extremely subtle or refined; extremely sensitive to slight impressions or perceptions.

2. Extremely refined or sophisticated; very elegant.

   excessively delicate or refined

3. Having an especially fine size or texture; made of very small particles or threads.

   Some recipes call for superfine sugar because it dissolves easier.

   of extremely fine size or texture

4. Of a very high or pure grade or quality.

5. Very good, excellent.

regular