Superfinely

adv. [f. prec. adj. + -LY².] In a superfine manner or degree.

1693.  W. Freke, Sel. Ess., xix. 106. Their Picking of Straws, Notions so idle, and yet so particular and superfinely nice.

1884.  Spurgeon, in Homiletic Monthly (U. S.), Aug., 640. A superfinely genteel and affected audience.