[v] prevent the occurrence of; prevent from happening; "Let's avoid a confrontation"; "head off a confrontation"; "avert a strike" [v] do away with
avert, avoid, debar, deflect, eliminate, fend off, head off, rid of, stave off, ward off
ask, call for, demand, involve, necessitate, need, postulate, require, take
anticipate, avert, bar, debar, deflect, deter, discourage, dishearten, estop, exclude, fend, fend off, forbid, foreclose, forestall, help, interfere, interpose, intervene, keep from, keep off, preclude, prevent, prohibit, repel, rule out, save, stave off,