establish (v.) Look up establish at
late 14c., from Old French establiss-, present participle stem of establir "cause to stand still, establish, stipulate, set up, erect, build" (12c., Modern French établir), from Latin stabilire "make stable," from stabilis "stable" (see stable (adj.)). For the excrescent e-, see e-. Related: Established; establishing. An established church or religion is one sanctioned by the state.