- right-oh
- rah
- right-ho
- righty-ho
- rrah
- rat-tat-tat
- right-o
- rhubarb rhubarb
- righteo
- rumpty
- ROTFLMAO
- rumpty-tumpty
- rubbish
- RIP
- rightio
- respect
- rite
- righto
- ready about
- rock on
- ready, aim, fire
- righty
- rather
- ruff
- ring-a-ding
- ringaling
- rowf
- reach for the sky
- rehi
- ReHi
- rumble
- rah-rah
- right
- roll on
- roll up
- ribbit
- rest his soul
- roflcopter
- result
- right on
- read 'em and weep
- rut roh
- rawr
- roger
- really
- roger that
- rat-a-tat-tat
- ruh-roh
Note: these words have been obtained from Wiktionary and have been classified and improved through automated computer linguistics processes.