The Collaborative International Dictionary of English v.0.48:
Surpassing \Sur*pass"ing\, a. Eminently excellent; exceeding others. "With surpassing glory crowned." --Milton. -- Sur*pass"ing*ly, adv. -- Sur*pass"ing*ness, n. [1913 Webster]WordNet (r) 3.0 (2006):
surpassingly adv 1: to a surpassing degree; "she was a surpassingly beautiful woman"