| Subject | English | Romanian |
| tech., law, el. | demand side response very fast active power control | reglaj foarte rapid al puterii active prin variația cererii de energie |
| comp., MS | Exchange Fast Access | Acces rapid Exchange (A feature that enables Exchange users to see new email messages and up-to-date calendar items as soon as they open Outlook, without waiting for it to finish synchronizing) |
| comp., MS | fail fast exception | excepție cu efect rapid (An exception that cannot be caught by any exception handler and that immediately causes the application to terminate and launch error reporting) |
| chem. | fast boiling water bath | baie de apă la fierbere |
| nucl.pow. | fast breeder | reactor reproducător cu neutroni rapizi |
| nucl.pow. | fast breeder reactor | reactor reproducător cu neutroni rapizi |
| nucl.pow. | fast breeding reactor | reactor reproducător cu neutroni rapizi |
| comp., MS | fast card | card rapid (An NFC-enabled card (like a credit card) that users can use for payments or other transactions even when the phone is locked) |
| agric. | fast-cutting | care taie repede |
| construct. | fast firing | ardere accelerată |
| construct. | fast firing | ardere rapidă |
| comp., MS | fast forward | derula înainte (To advance audio or video playback at a speed that is faster than normal) |
| math. | fast Fourier transform | transformata Fourier rapidă |
| forestr. | fast growing | creştere rapidă |
| agric. | fast-growing | cu creștere rapidă |
| zoot. | fast growing breed | rasă precoce |
| transp., mech.eng. | fast idle | ralanti accelerat |
| construct. | fast joint hinge | balama demontabilă |
| construct. | fast-operating water meter | apometru rapid |
| environ. | fast reactor Nuclear reactor which produces more fissile material than it consumes, using fast-moving neutrons and making plutonium-239 from uranium-238, thereby increasing the reactor's efficiency | reactor rapid |
| construct. | fast-setting cement | ciment cu priză rapidă |
| gen. | fast-spending aid | ajutor umanitar de urgență |
| gen. | fast-spending aid | ajutor de urgență |
| environ. | fast-start financing | finanțare inițială rapidă |
| environ. | fast-start funding | finanțare inițială rapidă |
| comp., MS | fast startup | pornire rapidă (A method of starting the computer that speeds boot time by ending the user session and hibernating the computer, rather than shutting down all running services) |
| gen. | fast-track | accelerat |
| law, interntl.trade. | fast track | procedură accelerată |
| gen. | fast track registered traveller programme | program de înregistrare a pasagerilor |
| gen. | fast track registered traveller programme | program de înregistrare a călătorilor |
| environ. | fast traffic No definition needed | trafic rapid |
| zoot. | fast trotting | galop de șarjă (in training, în antrenament) |
| comp., MS | Fast User Switching | Comutare rapidă utilizator (A feature in Windows that allows you to switch to a different computer user account without closing programs and files first) |
| construct. | light-fast | rezistent la lumină |
| construct. | light-fast | fotostabil |
