to borrow something that cannot itself be returned ...1548 obs.
from Latin mūtuāt-, ppl. stem of mūtuārī (to borrow); from mūtuus + -ate
FIRST DOCUMENTED USE
1548 - see EXAMPLE below
"...trustyng in this iourney to haue wonne their spurres, whiche for to set them selfes and their band the more gorgeously forward had mutuate, and borowed dyuerse and sondry summes of money, and for the repayment of the same, had morgaged and impignorate their landes & possessions..."
From: The Union of the Two Noble and Illustre Famelies of Lancastre [and] Yorke, beeying Long in Continual Discension for the Croune of this Noble Realme with all the Actes Done in Bothe the Tymes of the Princes, bothe of the One Linage and of the Other, Beginnyng at the Tyme of Kyng Henry the Fowerth...
- Edward Hall