  We discuss the possible symmetries of the effective lagrangian describing
interacting pseudoscalar-, vector-, and axial-vector mesons. Specific choices
of the parameters give rise to an $[SU(2)\otimes SU(2)]^3$ symmetry. This
symmetry can be obtained either {\it \'a la} Georgi, with all states in the
spectrum remaining massless, or in a new realization, implying decoupling of
the pseudoscalar bosons from degenerate vector and axial-vector mesons. This
second possibility, when minimally coupled with $SU(2)\otimes U(1)$ electroweak
gauge vector bosons, seems particularly appealing. All deviations in the
low-energy electroweak parameters are strongly suppressed, and the vector and
axial-vector states turn out to be quite narrow. A nearby strong electroweak
sector would then be conceivable and in principle it could be explored with
relatively low energy accelerators.
