Dictionary.com
Thesaurus.com

rogue trader

British  

noun

  1. a person who makes deals without due regard for normal business practices and controls

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Feb. 2002 - Allied Irish Bank ALBK.I said rogue trader John Rusnak had defrauded its U.S. subsidiary Allfirst of $691 million.

From Reuters • Sep. 20, 2019

A rogue trader used gaffer tape to repair a leaky roof in a £6,000 botch job, a court heard.

From BBC • Jan. 18, 2018

And yet Denton always loved gossipy details, as with his obvious joy at discovering that Barings rogue trader Nick Leeson used superman as his computer password.

From The Guardian • Jul. 5, 2015

The “I can’t know what every rogue trader is doing” defense has been used before, though I don’t doubt that it’s true.

From New York Times • May 2, 2013

In addition, the discovery of a rogue trader in its London office helped to mar 2012 for the bank.

From The Wall Street Journal • May 2, 2013