detrás
/deˈtɾas/ · A2 · prep
behind, at the rear
🔙 de + tras: tras = Latin trans (across, beyond) → from beyond = behind
Built from de (of, from) + tras (after, behind), which comes from Latin trans, the same root as transfer and transport. The stress falls on the last syllable: de-TRAS. With possessives: detrás de mí = behind me.