| A | B |
| decadent | "falling down" deteriorating, growing worse; declining |
| deciduous | having leaves that fall down at the end of the growing season; shedding leaves |
| demented | out of (down from) one's mind; mad;insane |
| demolish | pull or tear down; destroy |
| demote | move down in grade or rank |
| dependent | "hanging down from" unable to exist without the support of another |
| depreciate | go down in value or price; speaking slightly of; belittle |
| despise | look down on; scorn; feel contempt for |
| deviate | turn aside, or down; stray |
| devour | "gulp down" eat greedily |