| insolent | ill-mannered impertinent insolent |
| Insolenz | boldness |
| insolvent | insolvent |
| indolent | indolent |
| Inserent | advertiser |
| Insolvenz | insolvency |
| Indolenz | idleness |
| Insekt | insect bug |
| Insulin | insulin |
| Insurgent | insurgent |
| insistent | insistent |
| insofern | provided that |
| instant | instant |
| Mesolekt | mesolect |
| isoliert | transient |
| Absolvent | graduate |
| obsolet | obsolete deprecated |
| solenn | solemn |
| solvent | solvent |
| einölen | oil |