| diaphan | diaphanous translucent |
| Diapir | diapir |
| Diakon | deacon |
| Diamant | diamond |
| Diana | Diana Diane Dayanna Deana Deanna Deanne |
| Diashow | slideshow |
| diachron | diachronic diachronically |
| Graphen | graphene |
| Raphael | Raphael |
| Stephan | Stephen Steven |
| Drachant | tarragon |
| Ilchan | ilkhan |
| Äthan | ethane |
| Nathan | Nathan |
| Diakonin | deaconess |
| Diarchie | diarchy |
| Diasporal | diasporal |
| Diazepam | diazepam |
| Indian | turkey |
| Midian | Midian |