Adjective: overrefined ,ow-vu(r)-ri'fInd- Excessively delicate or refined
"His overrefined manners seemed out of place at the casual barbecue";
- superfine
Verb: overrefine ,ow-vu(r)-ri'fIn- Refine too much or with excess of subtlety
"He is overrefining this matter";
- over-refine
See also: refined
Type of: down [informal], fine-tune, polish, refine