The phrase "duplicitous by" is grammatically correct and can be used in written English, depending on the context
It is typically used to describe someone or something that is deceptive or misleading. Example: The company's advertisement was duplicitous by design, intentionally making false claims to lure in customers.
France's serial requests are treated as duplicitous by those who ask why big countries break rules that smaller ones have to obey (a game that first began when France and Germany bust the stability pact in 2002).
While sex is at the heart of physical intimacy, in this version of the Garden story genuine tenderness and mutuality between man and woman are impossible, since woman is duplicitous by nature.
Quirky people aren't fond of fair-weather friends and won't tolerate people who are duplicitous by nature.
"These were attempts to come up with more wholesome long-term solutions, but then for those to be followed immediately by an all-out offensive underlines a duplicitous approach by the government in dealing with the situation," said Rolake Akinola, an analyst with Control Risks, a security firm based in Britain.
Her duplicitous treatment by the whims of Aristotle Onassis.
Second, a candidate's campaign is shielded from a super PACs' duplicitous actions by a legal firewall that prevents coordination between the two entities.
However, doing so would undermine the IRIG's valued relationship with Talabani, while also proving exceedingly duplicitous, even by IRIG and KRG standards.
I really can't think about a more duplicitous act by Britain vis-a-vis the United States in the post-war period.
At a recent forum in Bangalore, India, Mr. Cameron was asked about suggestions of a duplicitous policy by Pakistan toward the Taliban that The New York Times and other news organizations drew from a trove of 75,000 leaked United States military documents posted on the Internet earlier last week by the whistle-blower organization WikiLeaks.
In Chinatown, Jake Gittes is duped by duplicitous women, beaten senseless by heavies and performs an act of deception in a public records office.
Remember that the most innocent comment made by the Royal Family can be misused mischievously and perniciously by duplicitous journalists, many of whom have their own very unsavoury agendas".
