Alternative spelling of off the books (preceding a noun only)

To alter financial records in order to commit fraud, tax evasion or theft.

plural of reference book

plural of case-book

plural of case book

(idiomatic, accounting) To add up all the debits and credits. / To put or keep any closed or conservative system or its analysis in balance.

plural of guest book

plural of cheque book

plural of cookery book

plural of closed book