Wiktionary
under-the-table
a. (alternative spelling of under the table nodot=1 English); in attributive use.
WordNet
under-the-table
adj. designed and carried out secretly or confidentially; "a sub-rosa report"; "has their under-the-table backing" [syn: sub-rosa, behind-the-scenes]
Usage examples of "under-the-table".
Men like Vittori Santorini and Gust Ordwyn used fools like Courtland and Jankovitch, in an under-the-table handshake that benefitted everyone involved.
He owned a small mall he wanted to get rid of, a long-term moneymaker, and he could arrange that the payment would be mostly under-the-table cash.
But its hiring executive had promised him various under-the-table, and thus nontaxable, financial perquisites that were communicated with subtle inferences.