Theatrical rhymes with:
asymmetrical, electrical, geometrical, metrical, nonelectrical, obstetrical, symmetrical, asymmetrical, categorical, cylindrical, electrical, empirical, geometrical, historical, hysterical, lyrical, maricle, mericle, metaphorical, metrical, morrical, nonelectrical, obstetrical, rhetorical, semicylindrical, spherical, symmetrical
Theatrical sounds like:
tattersall, tercel, terkel, tersely, theatrically, thoroughly, thorsell, torricelli, torsiello, tracheal, trachsel, tragically, treglia, treichel, tressel, tricil, trickel, trickle, tricycle, trokel, troxel, troxell, truglio, trujillo, truslow, trussell, truxal, truxillo, turkel