| Infinitiv | infinitive |
| Infinitivsatz | infinitive clause |
| Infinität | uncertainty |
| definitiv | definitive definite positively |
| zu-Infinitiv | zu-infinitive |
| infantil | infantile |
| intuitiv | intuitive |
| indikativ | indicative |
| Indikativ | indicative mode |
| instinktiv | instinctive |
| Infinitismus | infinitism |
| Infixation | infixation |
| infiziert | infected |
| Infant | infante |
| Infantizid | infanticide |
| infertil | infertile |
| informativ | informative |
| Affinität | affinity |
| Definition | definition |
| Rhinitis | rhinitis |