| Infimum | infimum |
| Minimum | minimum |
| Infamie | infamy |
| Infix | infix |
| infam | infamous |
| Animus | animus |
| Optimum | optimum |
| Maximum | maximum |
| Infos | lowdown |
| Infant | infante |
| Infarkt | infarction |
| Infekt | infection |
| Inferno | inferno |
| Influenz | influence |
| Info | info |
| infaust | infaust |
| infolge | due to as a result of |
| infra- | infra- |
| infrage | contemplable eligible in question |
| Tonfilm | talkie |