| Inquisition | inquisition Inquisition |
| Inquisitor | inquisitor |
| Akquisition | acquisition acceptance |
| Intuition | intuition |
| inquirieren | inquire |
| Liquidation | liquidation |
| Linguistin | linguist |
| Initiation | initiation |
| Investition | investment |
| Nutrition | nutrition |
| Infixation | infixation |
| Ingestion | ingestion |
| Inhumation | inhumation |
| Inkubation | incubation |
| Institution | fixture institution |
| Intinktion | intinction |
| Indikation | indication |
| Induktion | induction electromagnetic induction mathematical induction |
| Inspiration | inspiration |
| Intubation | intubation |