| infiltrieren | infiltrate |
| filtrieren | filter |
| Abfiltrieren | filtration |
| Infigieren | infixation |
| infizieren | infect |
| Nitrieren | nitriding |
| nitrieren | nitrate nitrify nitride |
| initiieren | initiate |
| insistieren | insist |
| Einfrieren | freeze |
| einfrieren | freeze |
| Infiltration | infiltration |
| influenzieren | influence |
| informieren | inform let know |
| infundieren | inject |
| konfigurieren | configure form |
| Filtrierung | filtration |
| defilieren | defile march past |
| filetieren | fillet |
| denitrieren | denitrify |