| insistent | insistent |
| Insistenz | insistence |
| konsistent | consistent |
| Assistent | assistant |
| resistent | resistant |
| Inserent | advertiser |
| Insurgent | insurgent |
| insolent | ill-mannered impertinent insolent |
| insolvent | insolvent |
| instant | instant |
| Konsistenz | consistency |
| inkonsistent | inconsistent |
| Resistenz | resistance |
| persistent | persistent |
| einnisten | nest implant settle down |
| existent | existent |
| nisten | nest |
| inmitten | in the middle of in the midst of |
| Einsimmen | Issime |
| Insignien | regalia |