[n] an equivalent counterbalancing weight
[n] a compensating equivalent
[n] equality of distribution
[v] oppose and mitigate the effects of by contrary actions; "This will counteract the foolish actions of my colleagues"
[v] place in opposition: can also be used in an abstract sense; "Oppose thy steadfast gazing eyes to mine"- Shakespeare
[v] make up for, make good
balance, balance, compensate, counteract, counterpoise, countervail, counterweight, equaliser, equalizer, equilibrium, equipoise, even off, even out, even up, neutralize, offset, oppose, turn the scales