| instabil | unstable instable |
| Instabilität | instability |
| bistabil | bistable |
| stabil | stable sturdy |
| Instanz | instantiate |
| instant | instant |
| inständig | urgent |
| Enstatit | enstatite |
| Istanbul | Istanbul (Englisch) |
| Insertio | minionette |
| Installer | installer |
| insb. | esp. |
| Einstand | debut celebrate deuce |
| Einstein | einstein |
| Insasse | passenger resident patient inmate |
| Insel | island isle |
| Insomnie | insomnia |
| Instinkt | instinct |
| Institut | institute institution institution building legal institution |
| Insulin | insulin |