late 14c., reneuen, "make (something) like new, refurbish; begin (an activity) again; replenish, replace with a fresh supply; restore (a living thing) to a vigorous or flourishing state," also figurative, of spiritual states, souls, etc.; from re- "again" + Middle English newen, neuen "resume, revive, renew" (see new). A Latin-Germanic hybrid formed on analogy of Latin renovare. From early 15c. as "be restored, flourish once more." Related: Renewed; renewing.