| Fibrin | fibrin |
| Fibrom | fibroma |
| fibrös | fibrous |
| Abrin | abrin |
| Fabrik | factory plant |
| febril | febrile |
| fiebrig | feverish |
| Citrin | citrine |
| Irin | Irishwoman |
| Fibrose | fibrosis |
| Fibula | calf bone |
| FIBU | financial accounting |
| Fibu | financial accounting |
| Fibel | primer spelling-book brooch fibula |
| Vibrant | trill |
| BRIC | BRIC |
| Abri | abri rock shelter |
| Brie | Brie |
| Cabrio | convertible cabriolet convertible car ragtop |
| Hybrid | hybrid |
| hybrid | hybrid |