  We present a model for leptonic mixing and the lepton masses based on flavor
symmetries and higher-dimensional mass operators. The model predicts bilarge
leptonic mixing (i.e., the mixing angles theta_{12} and theta_{23} are large
and the mixing angle theta_{13} is small) and an inverted hierarchical neutrino
mass spectrum. Furthermore, it approximately yields the experimental
hierarchical mass spectrum of the charged leptons. The obtained values for the
leptonic mixing parameters and the neutrino mass squared differences are all in
agreement with atmospheric neutrino data, the Mikheyev--Smirnov--Wolfenstein
large mixing angle solution of the solar neutrino problem, and consistent with
the upper bound on the reactor mixing angle. Thus, we have a large, but not
close to maximal, solar mixing angle theta_{12}, a nearly maximal atmospheric
mixing angle theta_{23}, and a small reactor mixing angle theta_{13}. In
addition, the model predicts theta_{12} ~= pi/4 - theta_{13}.
