| Inspektion | inspection |
| Inspektor | inspector |
| Infektion | infection |
| Injektion | injection shot |
| Insertio | minionette |
| Inspiration | inspiration |
| Insurrektion | insurrection |
| Introspektion | introspection |
| Prospektion | prospecting archaeological field survey archaeological prospection archaeological surveying |
| Dissektion | dissection |
| infektiös | infectious |
| Resektion | resection |
| Sektion | section |
| Intinktion | intinction |
| Induktion | induction electromagnetic induction mathematical induction |
| Inunktion | embrocation unction |
| Ingestion | ingestion |
| Invention | invention |
| Intention | intention |
| Institution | fixture institution |