The Collaborative International Dictionary of English v.0.48:
Tantalizingly \Tan"ta*li`zing*ly\, adv. In a tantalizing or teasing manner. [1913 Webster]WordNet (r) 3.0 (2006):
tantalizingly adv 1: in a tantalizing manner; "she smiled at him tantalizingly" [syn: tantalizingly, invitingly]