The Collaborative International Dictionary of English v.0.48:
Prudishly \Prud"ish*ly\, adv. In a prudish manner. [1913 Webster]WordNet (r) 3.0 (2006):
prudishly adv 1: in a prudish manner; "she acts prudishly, but I wonder whether she is really all that chaste" [syn: prudishly, puritanically]