Overrefine

[,әuvәri'fain]

(verb.) refine too much or with excess of subtlety; 'He is overrefining this matter'.

Checked by Eli--From WordNet

(v. t.) To refine too much.

Typed by Lesley

v.i. to refine too much.—n. Overrefine′ment any over subtle or affected refinement.

Typed by Ethan