cohabitate (v.)

1630s, from Late Latin cohabitatus, past participle of cohabitare "to dwell together," from co- "with, together" (see co-) + habitare "to live, inhabit, dwell," frequentative of habere "to have, to hold, possess" (from PIE root *ghabh- "to give or receive"). Related: Cohabitated; cohabitating.