Please find below a list of R adjectives which might be used to describe a person.
Positive
radiant
rare
rational
rationalist
reassuring
receptive
refreshing
regal
reliable
remarkable
renowned
reputable
resourceful
respectable
respectful
resplendent
responsible
responsive
righteous
Negative
raffish
ragged
rakish
rancorous
rank
rankest
rash
ratty
raucous
reckless
remorseless
reprehensible
repugnant
repulsive
resentful
revolting
ridiculous
rotten
rude
rundown
ruthless
Other
radical
rambunctious
random
rangy
rapid
rarer
raspy
ravenous
raw
reactionary
readable
real
realistic
rebel
rebellious
recalcitrant
recognizable
redheaded
relaxed
relentless
relieved
religious
reluctant
remorseful
remote
repentant
repressive
resonable
restful
restive
restless
retaliatory
retired
revealing
reverent
revolutionary
rhythmical
rich
richer
richest
rigid
rigorous
rocklike
romantic
rosy
rotund
rough
roughest
roughish
round
rousing
rowdy
royal
rubicund
ruddy
rugged
There are many more lists of adjectives on this website. For more adjectives starting in R, see this post containing a large number of adjectives beginning with the letter R, some of which can be used for describing people.
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