| Indigestion | indigestion |
| Ingestion | ingestion |
| Indikation | indication |
| Indiskretion | indiscretion |
| Indonesien | Indonesia |
| Induktion | induction electromagnetic induction mathematical induction |
| Vindikation | rei vindicatio vindication |
| indigen | indigenous native |
| Digression | excursion |
| Autodigestion | autodigestion |
| Digestif | digestif |
| digestiv | digestive |
| Suggestion | persuasion |
| Idistin | Idist |
| Infixation | infixation |
| Initiation | initiation |
| Intinktion | intinction |
| Invention | invention |
| Direktion | administration department |
| Immigration | immigration |