29 Moby Thesaurus words for "part company": agree to disagree, break up, break with, deactivate, debrief, demob, demobilize, detach, disband, discharge, disintegrate, dismiss, disorganize, dispel, disperse, dissolve, diverge, divide, fall out, go separate ways, have a falling-out, let go, muster out, part, release, scatter, separate, split, split up

Source: Moby Thesaurus II by Grady Ward, 1.0