tentatively

from WordNet (r) 3.0 (2006)

tentatively
    adv 1: in a tentative manner; "we agreed tentatively on a dinner
           date"

from The Collaborative International Dictionary of English v.0.48

Tentative \Ten*ta"tive\, a. [L. tentare to try: cf. F. tentatif.
   See {Tempt}.]
   Of or pertaining to a trial or trials; essaying;
   experimental. "A slow, tentative manner." --Carlyle. --
   {Ten*ta"tive*ly}, adv.
   [1913 Webster]