THESAURUS
come between
aggravate, alienate, barge in, break in, break in upon, burst in, butt in, charge in, crash, crash in, crash the gates, creep in, crowd in, cut in, disaffect, disunite, divide, edge in, elbow in, encroach, entrench, estrange, fan the flame, foist in, horn in, impinge, impose, impose on, impose upon, infiltrate, infringe, insinuate, interfere, interlope, interpose, intervene, intrude, invade, irritate, irrupt, light the fuse, make trouble, obtrude, pit against, press in, provoke, push in, put on, put upon, rush in, separate, set against, set at odds, set at variance, set on, sic on, slink in, slip in, smash in, sneak in, sow dissension, squeeze in, steal in, stir up trouble, storm in, throng in, thrust in, trench, trespass, work in, worm in
ROGET THESAURUS
come between
Interposition
VB
lie between,
come between, get between, intervene, slide in, interpenetrate, permeate, put between, introduce, import, throw in, wedge in, edge in, jam in, worm in, foist in, run in, plow in, work in, interpose, interject, intercalate, interpolate, interline, interleave, intersperse, interweave, interlard, interdigitate, sandwich in, fit in, squeeze in, let in, dovetail, splice, mortise, insinuate, smuggle, infiltrate, ingrain, interfere, put in an oar, thrust one's nose in, intrude, obtrude, have a finger in the pie, introduce the thin end of the wedge, thrust in.