| Intention | intention |
| intentional | intentional |
| Intension | tenseness |
| Invention | invention |
| Intinktion | intinction |
| Intonation | intonation |
| Intuition | intuition |
| Detention | detention |
| Retention | retention |
| Ingestion | ingestion |
| Infektion | infection |
| Injektion | injection shot |
| Intrusion | intrusion |
| Integration | integration |
| Interaktion | interaction |
| Intervention | intervention |
| Intubation | intubation |
| intensiv | intensive intense |
| Unterton | subharmonic |
| Extension | extension |