establish (v.) Look up establish at Dictionary.com
late 14c., from Old French establiss-, present participle stem of establir (12c., Modern French établir) "cause to stand still, establish, stipulate, set up, erect, build," 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.