| inkubieren | incubate |
| intubieren | intubate |
| inkludieren | include |
| inhibieren | inhibit |
| induzieren | induce |
| einkopieren | superimpose |
| extubieren | extubate |
| inskribieren | register |
| Infigieren | infixation |
| Zirkulieren | circulation |
| zirkulieren | circulate |
| undulieren | undulate |
| diskutieren | discuss |
| ennuyieren | bore annoy |
| indexieren | index |
| indizieren | index |
| infizieren | infect |
| infundieren | inject |
| inhalieren | inhale |
| initiieren | initiate |