Glossary entry (derived from question below)
Portuguese term or phrase:
negócio de favor
English translation:
undue preference; non-arm's length dealing
Portuguese term
Translations by lawyers for lawyers
Native in: English 
Works in: Portuguese to English, English
negócio de favor
Dec 11, 2021 19:51: Adrian MM. Created KOG entry
Proposed translations
Austria
Retd.T&I, Barrister & Austro-Advokat
Native in: English (Variants: Scottish, British)
Works in: Spanish to English, English to Spanish, French to English, and 5 more.
undue preference; non-arm's length dealing
Compare a legit. preferential trade agreement or a 'fraudulent preference' in insolvency only. I'm unsure 'unfair preference' relates to bankruptcy only,
I - having worked with 'enchufes' in Spain and 'pistons' in France -- find it odd that any Iberian company should ban such a practice.
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Note added at 3 hrs (2021-12-06 20:25:26 GMT)
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first web ref. again : https://www.ssm.com.my/acts/fscommand/act125s0293.htm
Bildergebnis für dealing not at arm's length A non-arm's length transaction, also known as an arm-in-arm transaction, refers to a business deal in which buyers and sellers have an identity of interest.
An unfair preference (or "voidable preference") is a legal term arising in bankruptcy law where a person or company transfers assets or pays a debt to a creditor shortly before going into bankruptcy, that payment or transfer can be set aside..
Will do!
Native in: Portuguese (Variant: European/Portugal) 
Works in: English to Portuguese, French to Portuguese, German to Portuguese, and 1 more.
patronage
A nível europeu, mais de 4 em cada 10 empresas consideram que a corrupção é um
problema para a atividade empresarial, e isto aplica-se também ao favorecimento e ao nepotismo.
https://eur-lex.europa.eu/resource.html?uri=cellar:058aecf0-...
Portugal
Outstanding ZH/SP/PT/ENG translation
Native in: English (Variants: US, British) , Portuguese (Variants: European/Portugal, Brazilian)
Works in: Portuguese to English, Portuguese to Chinese, Portuguese to Spanish, and 13 more.
business/corporate cronyism OR crony transaction(s)
| Cronyism soa a corupção enquanto um negócio de favor é um negócio em que uma das partes não tem vantagem, por exemplo prestando um avale para ajudar um amigo. |
Portuguese to English, English to Portug
Native in: English
Works in: Portuguese to English, English to Portuguese
mutual agreement
Brazil
32 years engineering/law/contracts
Native in: English (Variant: US) , Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English
courtesy/pro-bono services
United States
BA in Transl., MA in ESL, 15 yrs of exp.
Native in: Portuguese
Works in: English to Portuguese, Portuguese to English, Spanish to Portuguese, and 2 more.
favo(u)red dealing(s)
Example Sentence
If bribes permit firms to obtain favored dealings and proficiently gain assets, then the low charge benefits may permit ... https://www.coursehero.com/file/88485134/PQCJdocx/
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Note added at 7 hrs (2021-12-07 00:15:49 GMT)
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With large volumes in their control, they will have favoured dealings with the big distribution groups. https://unctad.org/system/files/official-document/INFOCOMM_c...
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