early 15c., from Anglo-French transgressour, Old French transgressor (14c.), and directly from Latin transgressor, agent noun from transgredi (see transgression).
Entries linking to transgressor
transgression n.
late 14c., from Old French transgression "transgression," particularly that relating to Adam and the Fall (12c.), from Late Latin transgressionem (nominative transgressio) "a transgression of the law," in classical Latin, "a going over, a going across," noun of action from 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"). Geological sense is from 1882.