Important Idioms and Phrases starting with Alphabet- R
| S.No. | Idioms/Phrases | Meaning |
| 1. | Rain cats and dogs | Rain very heavily |
| 2. | Rainy day | Future time of need, especially financial need |
| 3. | Read between the lines | To understand the hidden meaning |
| 4. | Red handed | Exactly while committing a crime or doing something wrong |
| 5. | Red letter day | A memorably important or happy occasion |
| 6. | Red tapism | Strict adherence to excessive paper work and official formalities |
| 7. | Rest on one’s laurels | Depending on the achievement made in the past |
| 8. | Rhyme or reason | Sense, logic or meaning |
| 9. | Right hand man | One’s most valuable assistant or supporter |
| 10. | Rise like a phoenix from its ashes | To make a miraculous comeback after a seemingly insurmountable setback |
| 11. | Rock the boat | To disturb a situation which was otherwise stable |
| 12. | Rolling stone | A restless person |
| 13. | Royal road | An easy or direct way of achieving a desired result |
| 14. | Rule the roost | To dominate |
| 15. | Run amuck | Mad with murderous frenzy |
| 16. | Run in the same groove | Maintaining a sweet relationship |
| 17. | Run-of-the mill | Average/ common |
| 18. | Run the gauntlet | To go through an unpleasant experience |