| institutionell | institutional |
| konstitutionell | constitutional |
| Institution | fixture institution |
| instituieren | institute |
| Konstitution | constitution |
| Restitution | restitution |
| instationär | transient |
| instrumentell | instrumental |
| Insinuation | insinuation |
| Inspiration | inspiration |
| Institut | institute institution institution building legal institution |
| Konstitutionalist | constitutionalist |
| Prostitution | prostitution |
| Substitution | substitution replacement |
| interstitiell | interstitial |
| Initiation | initiation |
| Intinktion | intinction |
| irrationell | irrational |
| intentional | intentional |
| sensationell | sensational |