| rip someone's head off | | | |
| rip to shreds | | | |
| rise and shine | | | |
| rise from the ashes | | | |
| rise to the challenge | | | |
| rise to the occasion | | | |
| rise to the purple | | | |
| rise with the lark | | | |
| risk it for the biscuit | | | |
| rivet counter | | | |
| roach coach | | | |
| roadblock | | | |
| road hog | | | |
| road less traveled | | | |
| road to Damascus | | | |
| roar back | | | |
| roar on | | | |
| robber baron | | | |
| rob Peter to pay Paul | | | |
| rob the cradle | | | |
| rock bottom | | | |
| rocket science | | | |
| rocket scientist | | | |
| rocket surgery | | | |
| rock hound | | | |
| rocking horse shit | | | |
| rocking-horse shit | | | |
| rock on | | | |
| rock out with one's cock out | | | |
| rock the boat | | | |
| rod for one's back | | | |
| rod in pickle | | | |
| roger that | | | |
| rogues' gallery | | | |
| roguey | | | |
| roguish | | | |
| roll back the years | | | |
| roller-coasterish | | | |
| rolling in it | | | |
| rolling stone | | | |
| roll in the aisles | | | |
| roll in wealth | | | |
| roll off the tongue | | | |
| roll of the dice | | | |
| roll one's eyes | | | |
| roll one's own | | | |
| roll out the red carpet | | | |
| roll tape | | | |
| roll the pitch | | | |
| roll up on | | | |
| roll up one's sleeves | | | |
| roll up the sidewalks | | | |
| roll with it | | | |
| Roma locuta est, causa finita est | | | |
| Rome wasn't built in a day | | | |
| romp home | | | |
| roof over one's head | | | |
| room for doubt | | | |
| root around | | | |
| root cause | | | |
| rooting interest | | | |
| rope of sand | | | |
| rose-colored glasses | | | |
| rose-coloured | | | |
| rose garden | | | |
| rose-tint | | | |
| rot in hell | | | |
| rotten apple | | | |
| rotten egg | | | |
| rough and ready | | | |
| rough around the edges | | | |
| roughen up | | | |
| rough justice | | | |
| rough out | | | |
| rough patch | | | |
| rough sledding | | | |
| rough sleeper | | | |
| rough trot | | | |
| round of applause | | | |
| round the bend | | | |
| round the clock | | | |
| round up | | | |
| roving eye | | | |
| row back | | | |
| row in the same boat | | | |
| row of pins | | | |
| royal bumps | | | |
| rubber hose | | | |
| rubber johnny | | | |
| rubber room | | | |
| rub down | | | |
| rub elbows | | | |
| rub in | | | |
| rub it in | | | |
| rub off | | | |
| rub off on | | | |
| rub one's hands together | | | |
| rub salt in someone's wounds | | | |
| rub salt in the wound | | | |
| rub shoulders | | | |