1965, agent noun from re-enact (v.). Specifically, "one whose hobby or profession is to embody accurate historical presentation" by 1984, American English.
early 14c., "summon into court to prove a title," from Anglo-French voucher, Old French vocher "to call, summon, invoke, claim," probably from Gallo-Roman *voticare, metathesis of Latin vocitare "to call to, summon insistently," frequentative of Latin vocare "to call, call upon, summon," which is related to vox (genitive vocis) "voice" (from PIE root *wekw- "to speak"). Meaning "guarantee to be true or accurate" is first attested 1590s. Related: Vouched; vouching.
past-participle adjective from revise (v.). Revised Version of the Bible was done 1870-84 in Great Britain by more than 50 scholars from various denominations; so called because it was a revision of the 1611 ("King James") translation, also known as the Authorized Version. More accurate, less lovely.
early 15c., of persons, "strict, exacting, harsh, stern;" of laws, actions, etc., "marked by inflexibility, severe, exacting," hence "unmitigated, merciless;" from Old French rigorous (13c., Modern French rigoureux), from Medieval Latin rigorosus, from Latin rigor "stiffness, firmness" (see rigor). The meaning "scrupulously accurate, precise" is from 1650s. Related: Rigorously; rigorousness (c. 1400).