| deduktiv | deductive |
| Deduktion | deduction |
| induktiv | inductively |
| Detektiv | detective |
| defektiv | defective |
| Edukt | reactant |
| Reduktion | reduction |
| Seduktion | seduction |
| duktil | ductile |
| koedukativ | coeducational |
| produktiv | productive |
| destruktiv | destructive |
| selektiv | selective |
| Didaktik | didactics |
| direktiv | directive |
| reaktiv | reactive |
| Delativ | delative case |
| eruptiv | igneous eruptive |
| sedativ | sedative |
| Beduinin | bedouin |