| Interslawisch | Interslavic |
| Interslavisch | Interslavic |
| interrassisch | interracial |
| intergalaktisch | intergalactic |
| interozeanisch | interoceanic |
| intervokalisch | intervocalic |
| unterseeisch | submarine |
| Urslawisch | Common Slavic |
| urslawisch | proto-Slavic |
| ostslawisch | East Slavonic |
| infernalisch | infernal |
| Interglazial | interglacial interglacial episode interglacial interval |
| interglazial | interglacial |
| interimistisch | interim |
| intrinsisch | intrinsic |
| winterlich | wintry |
| Unterstrich | underline |
| unterirdisch | underground subterranean subterraneous |
| untermeerisch | submarine |
| Petersfisch | John Dory |