The Collaborative International Dictionary of English v.0.48:
Sentimentally \Sen`ti*men"tal*ly\, adv. In a sentimental manner. [1913 Webster]WordNet (r) 3.0 (2006):
sentimentally adv 1: in a sentimental manner; "`I miss the good old days,' she added sentimentally" [ant: unsentimentally]