*rigor* m. rigor; *ser de ——* be strictly in accordance with the rules (cf. French *de rigueur*)
*rincón* m. corner
*río* m. river
*ripio* m. scrap; *no perder ——* miss nothing
*riqueza* f. riches, wealth
*risueño* smiling
*Roa Bárcena, José María* (1827-1908), distinguished Mexican poet, journalist, and historian
*rodeo* m. turn, winding; *andar con ——s* beat about the bush
*rodilla* f. knee; *de ——s* on one's knees
*rogar* pray