| Inklusion | inclusion |
| inklusive | including |
| Konklusion | conclusion |
| Exklusion | exclusion |
| Okklusion | occlusion |
| Illusion | illusion |
| Intrusion | intrusion |
| Infusion | infusion |
| Inkluse | fossil inclusion resin |
| Allusion | allusion |
| Kollusion | collusion |
| Implosion | implosion |
| Inversion | anastrophe |
| Intension | tenseness |
| Invasion | invasion |
| Inflation | inflation |
| Inkubation | incubation |
| Inkasso | debt collection collections |
| inkludieren | include |
| Enklitikon | clitic |