| informell | casual informal |
| formell | prim |
| Informant | ear informant |
| informiert | enlightened |
| Formel | formula |
| einförmig | humdrum monotonous |
| Inferenz | inference |
| Informatik | computer science informatics computing information technology |
| infertil | infertile |
| infolge | due to as a result of |
| informativ | informative |
| informieren | inform let know |
| Zahnformel | dental notation |
| unförmig | musclebound |
| anfordern | apply |
| Abformen | molding |
| Formen | molding |
| formen | form shape model sculpt sculpture |
| Reformer | reformer |
| umformen | transpose |