balanced

being in a state of proper balance or equilibrium; "the carefully balanced seesaw"; "a properly balanced symphony orchestra"; "a balanced assessment of intellectual and cultural history"; "a balanced blend of whiskeys"; "the educated man shows a balanced development of all his powers"

• counterbalanced, counterpoised — brought into equipoise by means of a weight or force that offsets another
• harmonious, proportionate, symmetrical — exhibiting equivalence or correspondence among constituents of an entity or between different entities
• poised — marked by balance or equilibrium and readiness for action
• stable — maintaining equilibrium
• well-balanced — in an optimal state of balance or equilibrium