| Intrusion | intrusion |
| intrusiv | intrusive |
| Intension | tenseness |
| Infusion | infusion |
| Inklusion | inclusion |
| Intention | intention |
| Intron | intron |
| Intuition | intuition |
| entrüsten | indignant |
| Illusion | illusion |
| Inversion | anastrophe |
| Invasion | invasion |
| Interferon | interferon |
| Intinktion | intinction |
| Introsort | introspective sort |
| intro | intro |
| Intro | intro introduction launch opening |
| Intaglio | intaglio |
| Intarsie | intarsia |
| Integration | integration |