1

decay

2

drain

3

dice

4

dawn

5

down

6

data

7

descent (or descend)

8

dim

9

doll

10

drink

11

dog (bonus points if used as a verb)

12

debris

13

dribble

14

date

15

dollop

16

drip

17

dusk

18

dust

19

drive

20

dram

21

dish

22

decline

23

drop

24

delight

25

dregs

26

double

27

desk

28

dirt

29

deal

30

done