Rightful, raucous, racy, red, round, rough, righteous, radical, ripe, reek, raunchy.
Some five letter words that start with R are:racerradarradiorallyrapidreachregalrelayrepayremitresinrhymeriderridgerinserivalriverrivetroachrobinrobotroostrulerrumorrusty
regular
a synonym for slow beginning with the letter r is retard
· rhododendron · rose of sharon · roses
rat
roach
red
Renfrew is a town in Scotland. It begins with the letter R.
The name of the European fish with the name beginning with letter D and the third letter is R is Dory.
Reduction is a synonym for sale. It begins with the letter r.
A rose is a type of flower that begins with the letter "r".
The name of a full turn, beginning with the letter "r", would probably be rotation.