transgress (v.)

late 15c., from Middle French transgresser (14c.), from Latin transgressus, past participle of transgredi "step across, step over; climb over, pass, go beyond," from trans "across, beyond" (see trans-) + gradi (past participle gressus) "to walk, go" (from PIE root *ghredh- "to walk, go") . Related: Transgressed; transgressing.