re·new 
(rĭ-n, -ny)
(rĭ-n, -ny)v. re·newed, re·new·ing, re·news
v.tr.
1. To make new or as if new again; restore: renewed the antique chair.
2. To take up again; resume: renew an old friendship; renewed the argument.
3. To repeat so as to reaffirm: renew a promise.
4. To regain or restore the physical or mental vigor of; revive: I renewed my spirits in the country air.
5.
a. To arrange for the extension of: renew a contract; renew a magazine subscription.
b. To arrange to extend the loan of: renewed the library books before they were overdue.
6. To replenish: renewed the water in the humidifier.
7. To bring into being again; reestablish.
v.intr.
1. To become new again.
2. To start over.
[Middle English renewen : re-, re- + newen, to renew (from new, new; see NEW).]
re·newer n.