| Subject | Spanish | French |
| comp., MS | aplicación front-end/back-end | application frontale/principale |
| earth.sc., mech.eng. | "back boiler" | "backboiler" |
| comp., MS | back-end | principal |
| fin., engl. | back office | service de post-marché |
| commun., IT, engl. | back office | arrière-guichet |
| IMF. | back office | back-office |
| IMF. | back office | service-titres |
| IMF. | back office | postmarché |
| fin., engl. | back office | post-marché |
| construct. | "cut-back" | cut-back pétrolier |
| construct. | "cut-back" | bitume fluidifié |
| med. | feed-back | rétroaction |
| med. | feed-back | feed-back |
| cinema | flash-back | retour en arrière |
| cinema | flash-back | flash-back |
| social.sc. | flash-backs | phénomène de récurrence |
| social.sc. | flash-backs | écho |
| social.sc. | flash-backs | flash backs |
| industr., construct. | foam backs | envers mousse |
| health., nat.sc. | inhibición feed-back | rétroinhibition |
| health., nat.sc. | inhibición feed-back | rétro-action |
| fin. | operación del tipo "back-to-back" | transaction du type face à face |
| cinema | play-back | présonorisation |
| commun., IT | rolled back | désactivation de transactions |
| comp., MS | servidor back-end de CRM | Serveur principal CRM |