| Dekalog | Decalogue Ten Commandments |
| Dialog | dialogue dialog box |
| Dekaeder | decahedron |
| Dekanin | dean |
| Dekade | decade group of ten period of ten days period of ten weeks period of ten months decennium |
| Dekan | dean |
| Dekor | decor |
| deka- | deca- |
| Pedalos | pedalo |
| Katalog | catalog catalogue |
| Tagalog | Tagalog |
| analog | analogous analog |
| Epilog | epilogue |
| Ekloge | eclogue |
| Nekrolog | necrology obituary |
| Weblog | weblog |
| Dekameron | Decameron |
| Dekanter | decanter |
| Dekoratör | decorator |
| Dodekagon | dodecagon |