| infam | infamous |
| Infamie | infamy |
| Infos | lowdown |
| Infant | infante |
| Infix | infix |
| Info | info |
| infra- | infra- |
| Einfall | idea incidence invasion raid |
| Einfalt | naivete |
| Infarkt | infarction |
| Infekt | infection |
| Infimum | infimum |
| einfach | simple easy simply single |
| infaust | infaust |
| infrage | contemplable eligible in question |
| Anfall | attack seizure |
| Anfang | beginning commencement onset start origin outset |
| Unfall | accident casualty |
| unfair | unfair |
| Infrarot | infrared |
| infrarot | infrared |