| Inquisitor | inquisitor |
| Inquisition | inquisition Inquisition |
| Inhibitor | inhibitor |
| Liquidator | liquidator |
| Requisite | prop |
| Akquisiteur | acquirer canvasser |
| Akquisition | acquisition acceptance |
| Requisit | prop property |
| exquisit | exquisit |
| Visitor | visitor pattern |
| Initiator | initiator |
| Inspirator | inspirer |
| Indikator | indicator |
| Induktor | inductor |
| Inkubator | incubator business incubator |
| Investor | investor |
| Ionisator | ioniser ionizer |
| Quästor | quaestor |
| Großinquisitor | Grand Inquisitor |
| inquirieren | inquire |