From The Collaborative International Dictionary of English v.0.48 :
Bemuse \Be*muse"\, v. t.
To muddle, daze, or partially stupefy, as with liquor.
[1913 Webster]
A parson much bemused in beer. --Pope.
[1913 Webster] Ben
From WordNet (r) 3.0 (2006) :
bemuse
v 1: cause to be confused emotionally [syn: bewilder,
bemuse, discombobulate, throw]