avert, forestall, head off, help, preclude, prevent, stave off

anticipate, providenegate, neutralize, nullifysavebaffle, balk, checkmate, deter, foil, frustrate, thwartbar, block, hamper, hinder, impede, interfere (with), retard, stalldeflect, fend (off), stop, ward (off)avoid, circumvent, dodge, duck, elude, escape, eschew, evade, shake, shirk, shunforbid, inhibit, prohibitarrest, check, halt, stopcompensate (for), counteract, counterbalance, make up (for), offset

abet, aid, assistease, facilitate, smooth, unclogadvance, cultivate, encourage, forward, foster, further, nurture, promoteallow, leave, let, permit