| Insurgent | insurgent |
| Inserent | advertiser |
| einsargen | coffin |
| Instrument | instrument |
| insistent | insistent |
| insolent | ill-mannered impertinent insolent |
| insolvent | insolvent |
| Nargent | Naissaar |
| Indulgenz | indulgence |
| inherent | incident |
| inhärent | inherent |
| Insekt | insect bug |
| Inserat | advertisement |
| Insigne | insigne |
| Insistenz | insistence |
| Insolenz | boldness |
| Insolvenz | insolvency |
| Insourcing | insourcing |
| Insulin | insulin |
| einsagen | blow away |