alleviative, alleviator, anodyne, assuager, balance, balance rudder, balance wheel, ballast, balm, calmative, counterbalance, counterweight, cushion, dolorifuge, fin, fixative, flywheel, governor, gyroscope, hairspring, keel, lenitive, mitigator, moderator, modulator, mollifier, mordant, pacificator, pacifier, palliative, peacemaker, pendulum, restraining hand, salve, sedative, shock absorber, soother, soothing syrup, springs, stabilizator, stiffening, tail plane, temperer, tranquilizer, wiser head