What is another word for "counterpoise"?

Roget's Thesaurus (1911) lists these synonyms for "counterpoise": action, against, although, analytical, and, antagonism, antagonistic, antagonize, arroba, avoirdupois, baby, balance, ballast, beam, beat, block, burden, burdensome, burthen, carat, centigram, check, clash, collision, compensate, compensation, conflict, conflicting, contrariety, contrary, contravene, counter, counteract, counteraction, cross, cumber, cumbersome, cumbrous, direction, drachma.