exult (v.) Look up exult at Dictionary.com
1560s, "to leap up;" 1590s, "to rejoice, triumph," from Middle French exulter, from Latin exultare/exsultare "leap about, leap for joy," frequentative of exsilire "to leap up," from ex- "out" (see ex-) + salire "to leap" (see salient (adj.)). The notion is of leaping or dancing for joy. Related: Exulted; exulting.