[awf-th uh-boo ks, of-]
- not recorded in account books or not reported as taxable income.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for off-the-books
The largest of these off-the-books obligations have been incurred by local governments and state banks.China’s Looming Debt Disaster
Gordon G. Chang
August 23, 2011