1. 
[syn: probably, likely, in all likelihood, in all probability, belike]
The Collaborative International Dictionary of English v.0.48:
Belike \Be*like"\, adv. [Pref. be- (for by) + like.]
   It is likely or probably; perhaps. [Obs. or Archaic] --
   Be*like"ly, adv.
   [1913 Webster]
         Belike, boy, then you are in love.       --Shak.
   [1913 Webster]
WordNet (r) 3.0 (2006):
belike
    adv 1: with considerable certainty; without much doubt; "He is
           probably out of the country"; "in all likelihood we are
           headed for war" [syn: probably, likely, in all
           likelihood, in all probability, belike]