on the fiddle

US /ɑn ðə ˈfɪdl/
UK /ɑn ðə ˈfɪdl/
"on the fiddle" picture
1.

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involved in dishonest or illegal activities, especially involving money

:
He was caught on the fiddle, taking money from the company.
Został złapany na oszustwie, biorąc pieniądze od firmy.
Many politicians are suspected of being on the fiddle.
Wielu polityków jest podejrzanych o bycie na bakier z prawem.