Hume warned that overrefinement, which is born of excessive luxury, is the most extreme danger to taste and national sensibility.    From Wordnik.com.  [The Ruins of Empire: Nationalism, Art, and Empire in Hemans's Modern Greece] Reference

Marked by an unbecoming delicacy or overrefinement.    From Wordnik.com.  [Meet GRRM and (maybe) cast and crew] Reference

Paradox - ically, Gothic aberration might stem not solely from rusticity and lack of cultivation but also from perverse overrefinement, as in the phenomena we now generally regard as baroque.    From Wordnik.com.  [CONCEPT OF GOTHIC] Reference

Little Fuzzy had known exactly what he wanted when he'd started making that thing, he'd kept on until it was as perfect as possible, and had stopped short of spoiling it by overrefinement.    From Wordnik.com.  [Little Fuzzy] Reference

"worn out," but today "effete" is more likely to suggest overrefinement, weakness of character, snobbery, and effeminacy.    From Wordnik.com.  [Merriam-Webster's Word of the Day] Reference

A most attentive observer of men, even at court, where a certain varnish of overrefinement conceals nearly all individual features.    From Wordnik.com.  [The Great Events by Famous Historians, Volume 11] Reference

But as important, the authors deftly shift from money and high politics to social and cultural matters, as they discern, with sharp eyes and tart wit, how such developments as divergent infantry tactics both reflected and shaped national self-images and notions of masculinity; how the two nations’ very different educational approaches have engendered and entrenched opposing habits of mind and expression; and how, ever since the eighteenth century, the sometimes sober, sometimes swaggering influence of the English aristocracy’s sport and country clothing (and of English male tailoring techniques) have enlivened French high fashion, giving it a bounciness that militates against its tendency toward overrefinement.    From Wordnik.com.  [Of Rivals and Revivals] Reference

4-distortion or overrefinement of a meaning or argument.    From Wordnik.com.  [Think Progress] Reference