1540s, "to come to life again" (also "to restore to life again"), from re- "back, again" + live (v.). Meaning "to experience over again" is attested from c. 1711. Related: Relived; reliving.
He relived the horrors of war
relinquish
reliquary
relique
reliquiae
relish
relive
reload
relocate
relocation
reluctance
reluctant