THESAURUS
halve
amputate, apportion, ax, be partners in, bifurcate, bisect, branch, butcher, by two, carve, chop, cleave, cooperate, cut, cut away, cut in two, cut off, dichotomize, dimidiate, dissever, divide, divide with, divvy up with, excise, fission, fissure, fork, gash, go even stephen, go fifty-fifty, go halvers, go halves, go shares, hack, hew, in half, incise, jigsaw, lance, pare, prune, ramify, rend, rive, saw, scissor, sever, share, share in, slash, slice, slit, snip, split, split in two, split the difference, subdivide, sunder, tear, transect, whittle
ROGET THESAURUS
halve
bisection
VB
bisect,
halve, divide, split, cut in two, cleave dimidiate, dichotomize, go halves, divide with, separate, fork, bifurcate, branch off, out, ramify.