| dint | An impression or hollow in a surface | |
| dilute | To make a liquid less concentrated by adding water or another solvent to it. | |
| dilettante | A person who cultivates an area of interest, such as the arts, without real commitment or knowledge | |
| dilatory | tending to delay or procrastinate; slow to act | |
| digression | A temporary departure from the main subject in speech or writing | |
| diffident | Shy and lacking self-confidence | |
| didactic | Intended to teach, particularly in having moral instruction as an ulterior motive | |
| dichotomy | A division or contrast between two things that are or are represented as being opposed or entirely different | |
| diatribe | A forceful and bitter verbal attack against someone or something | |
| diaphanous | Light, delicate, and translucent | |