attire (v.)

c. 1300, atiren, "to fit out, equip; to dress in finery, to adorn," from Old French atirer, earlier atirier "to equip, ready, prepare," from a- "to" (see ad-) + tire "order, row, dress" (see tier). Related: Attired; attiring.

c. 1300, "equipment of a man-at-arms; apparel, dress, clothes," from attire (v.).