| Term | Definition |
| Abdicate | to renounce or relinquish a throne, esp. in a formal manner |
| Interdict | to prohibit or place under legal sanction |
| Dis, dif, di | not, apart, away |
| Dissemble | to disguise or conceal behind a false appearance |
| Disseminate | to scatter or spread widely |
| Distend | to expand by stretching |
| Diffidence | quality of being shy or timid |
| Doc, doct | teach |
| Docile | ready and willing to be taught; teachable |
| Doctrine | particular principle, position or policy taught or advocated, as in government or religion |
| Doctrinaire | a theorist who attempts to apply doctrine without realization of practical considerations; impractical theorist |