Rare
Rouge
Révolutionnaire
Radin
Rabougri
enormous & possibly exciting
Some "R" Adjectives are: Radiant Royal Rolling Round, etc.
rugged
rusé (foxy, canny), ridicule (ridiculous), raide (stiff), radieux (glorious, radiant), radin (fam.) (stingy), respectueux (respectful), rieur (cheerful, merry), ronchon (grumpy), rose (pink), rouge (red), rougeâtre (redish), rugueux (rough)...
realistic, reliable, remarkable
Optimistic, reliable, vigilant and xenophobic start with those letters.
rude
pragmaticreliable
Rapid, razor, rebel and regal are 5 letter adjectives. Additional adjectives include ritzy, rough, round, royal, rural and rusty.
rabid, mangy, smelly
* rambunctious * resourceful
radiant