The initial idioms of the letter R

retrieve	retrieve from
retrieve from some place	ret
return	return for
return from	return the compliment
return the favor	return to
return to (one's) muttons	return to haunt
return to some place	return to the fold
return with	reunite with
rev	rev something up
rev up	reveal
reveal to	revealing
revel in	revenge
Revenge is a dish best served cold	Revenge is sweet
revenge oneself on	reverberate through
reverberate throughout	reverberate with