1889, "movement which led to the unification and independence of Italy," Italian, literally "uprising" (of Italy against Austria, c. 1850-60), from risorgere, from Latin resurgere "rise again, lift oneself, be restored" (see resurgent).
riser
risible
rising
risk
risky
Risorgimento
risotto
risque
Ritalin
ritardando
rite