Counter-weight: An object that balances or maintains equilibrium of a system. Some of the antonyms for the word counter-weight are support, burden, weight, and load. A support is the opposite of a counter-weight, as it holds or lifts an object in place. A burden is also the opposite of a counter-weight, meaning something that is heavy or difficult to carry. Weight and load are comparable antonyms too, since they mean the pressure exerted by a heavy object on a surface. In conclusion, antonyms for the word counter-weight include support, burden, weight, and load, which represent different aspects of heaviness and equilibrium.