ruthless

rusty

rustic

rural

rust

rupture

rumor

rummage

ruminate

rumble

ruinous

rugged

ruffian

ruffle

rueful

rudimentary

ruddy

ruby

rubble

routine

rout

roundabout

rotten

rote

robust

roar

roam

rival

rite

ripple

ripe

rip

riotous

riot

rinse

rigor

rim

rigorous

rigid

rift

ridicule

riddle

rhythm

reward

revoke

revive

revert

reverence

revenue

reverent

revelation

reverberate

retrieve

retreat

retract

retort

reticent

retard

retail

reticence

retain

retaliate

resume

restore

restoration

restitution

respite

resource

respiration

respect

resourceful

resort

resolve

resolution

resolute

resist

resilient

resign

residue

reservoir

residual

reside

resentment

rescind

requisition

requisite

repulsive

repute

repudiate

repugnant

reptile

reprove

reprisal

reprehend

repose

replicate

replica

repellent

repel

repeal

renown

renowned

renovation

renovate

renounce

rendition

rendezvous

remote

render

remorseful

remnant

remorse

remiss

remedy

remarkable

reminiscence

relief

relish

relinquish

relic

reliance

relevant

relentless

release

relapse

reject

rejuvenate

reiterate

rejoice

reinforce

reimburse

rehearse

rehabilitate

regulation

regulate

regiment

refute

refund

regime

refuge

refresh

refrain

reflection

refined

refine

referee

redundant

redress

redeem

recycle

recur

recruit

recreation

reconstruct

reconnaissance

reconcile

recompense

recollection

recoil

recluse

reclaim

reckless

reciprocal

recipient

recipe

recession

reception

recess

recede

recall

rebut

recalcitrant

rebuke

rebuff

rebellion

rebel

rear

realm

rebate

raze

ravenous

rave

ravage

ration

ratio

ratify

rash

rapture

rapport

rapacious

rap

ransom

ransack

rank

random

rampant

ramble

raid

ragged

radiate

rage

rally

radical

radiant

radiance

racket

rush out

run wild

run parallel to

run out of

run into

rust away

root in

roll over

rocking chair

retentive power

reward sb.

return to life

result in

result from

rough hands

replace with

renew a friendship

relative speed

reproductive capability

removed from

rich in

REM (rapid eye movement)

regardless of

residential lot

reflective glass

reference point

refer to

reflective tape

reduce to

refuse site

relevant to

red cedar

real estate

raw sewage

raw material

rather than

ready market

raise money

reference to

rag paper

reach its peak

range from to

railroad industry