Rare
Rouge
Révolutionnaire
Radin
Rabougri
enormous & possibly exciting
Some "R" Adjectives are: Radiant Royal Rolling Round, etc.
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)...
rugged
realistic, reliable, remarkable
Optimistic, reliable, vigilant and xenophobic start with those letters.
Rapid, razor, rebel and regal are 5 letter adjectives. Additional adjectives include ritzy, rough, round, royal, rural and rusty.
rude
pragmaticreliable
rabid, mangy, smelly
* rambunctious * resourceful
radiant