| Term | Definition |
| tangible | able to be touched; actual |
| dormant | that which is temporarily inactive |
| dormitory | a place with sleeping facilities for a number of people |
| tangent | touching; adjacent |
| intangible | incapable of being touched or perceived through touch; not easy to describe |
| dormancy | a state of inactivity |
| dynamism | an active, forceful state or quality |
| dynasty | a powerful group or family; a succession of hereditary rulers |
| isodynamic | of or realting to equality or uniformity of force |
| dynamo | an individual possessing unusual energy |
| dynamic | energetic; forceful; of or relating to power |
| errant | roving or wandering; itinerant |
| erroneous | the quality of being mistaken; incorrect |
| err | to make a mistake; to go astray |
| error | something incorrectly done out of ignorance or carelessness |
| aberrant | that which strays away from the right or normal way |