The initial idioms of the letter R

rub up the wrong way	rub with
rubber chicken dinner	rubber jungle
rubber sock	rubber stamp
rubberneck	rubber
rubber-stamp	rubbish in, rubbish out
rubbish	rube
Rubicon	ruby
ruby slippers	Rots of ruck!
ruckus	rude
rue the day (that) (something) happened	rue
ruffle feathers	ruffle its feathers
ruffle some feathers	ruffle someone's feathers
ruffle up	ruffle a few feathers
ruffle	rug
rug rat	ruin of