checkmate

bar, block, clog, encumber, fetter, hamper, handicap, hinder, hobble, hold back, impede, inhibit, interfere (with), manacle, obstruct, shackle, tie up, trammel

arrest, check, halt, set back, short-circuit, stall, stop

avert, forestall, obviate, preclude, prevent

negate, neutralize, nullify

counteract, offset

conquer, defeat, overcome