1

Ra (the ancient Egyptian solar deity)

2

rabbit

3

race

4

radial

5

rae (which in Scottish means the name Grace)

6

raft

7

reap

8

rebel

9

recipe

10

redial

11

reed

12

refund

13

regular

14

rialto

15

ribbon

16

rice

17

riddle

18

riel (monetary unit of Cambodia)

19

rift

20

right

21

road

22

robot

23

rocket

24

rodeo

25

roe

26

ROFLA (this could refer to humor—rolling on the floor laughing a lot—or maybe a gorge formed by streams flowing from a glacier)

27

rogue

28

ruan (a Chinese instrument)

29

rubber

30

ruckus