| Inkongruenz | incongruity |
| Kongruenz | agreement, concord congruity |
| Inkohärenz | incoherence |
| Inkontinenz | incontinence |
| Konfluenz | confluence |
| kongruent | congruent |
| Influenz | influence |
| Einkerbung | notch |
| Einkopplung | coupling |
| Ginkobaum | ginkgo |
| Inkompetenz | incompetence |
| Inkubus | incubus |
| Linköping | Linköping |
| hinknien | kneel down |
| Einkommen | income |
| Einkorn | einkorn littlespelt |
| Inkluse | fossil inclusion resin |
| Inkognito | incognito |
| inkognito | incognito |
| Inkonsistenz | inconsistency |