noun, noun which may take the genitive case particle 'no'
under-the-table; secret; off-the-books
Loanword from English, used to describe payments, deals, or activities done secretly or illegally, often to avoid taxes or regulations.
彼はアンダーザテーブルの取引で多額の現金を受け取った。
He received a large amount of cash in an under-the-table deal.
アンダーザテーブルの支払いは法律違反になる可能性がある。
Under-the-table payments can be a violation of the law.