Word Origin & History
celeritylate 15c., from M.Fr. célérité, from L. celeritatem (nom. celeritas), from celer "swift," from PIE base *kel- "to drive, set in swift motion" (cf. Skt. carati "goes," Gk. keles "fast horse or ship," keleuthos "journey, road," Lith. sulys "a gallop," O.H.G. scelo "stallion").