The phrase "disingenuous by" is grammatically correct and can be used in written English.
It is typically used to describe someone or something that is dishonest or insincere in their actions or words. Example sentence: The politician's statement was deemed disingenuous by many voters, who felt that it was an attempt to manipulate public opinion rather than a genuine expression of their beliefs.
Tellem said Boston had been disingenuous by saying that the Rangers were driving news of the trade.
BEING called "incredibly disingenuous" by the Huffington Post, an influential blog, cannot have been how Patty Stonesifer expected to mark her tenth anniversary in charge of Bill Gates's efforts to make the world a better place.
However, the Deputy Prime Minister's comments were labelled as "evasive and disingenuous" by the Refugee Council, which warned that the 2.3 million refugees who have fled Syria have little prospect of being able to get to Britain to claim asylum.
Al-Shabaab, a ruthless organisation which beheads opponents and organises public stonings of those who do not adhere to its harsh ideology, is being disingenuous by styling itself as a champion of Muslims.
Maude accused the unions of being disingenuous by claiming serious negotiations over the public sector deal had stopped, arguing that further talks were due to take place on Tuesday.
But critics of the measure, like Joshua Rosenau of the National Center for Science Education, think that lawmakers are being disingenuous by saying they are simply trying to help teachers who want to give students an opportunity to express their doubts.
You must take care not to distort information either by disingenuous phrasing or by omission.
Ed Valentine of Big Blue View: "I thought this was a pretty disingenuous 'offer' by Umenyiora, anyway.
The government is playing a disingenuous game by conflating pay progression with cost-of-living increases.
Sometimes for disingenuous purposes by studios seeking to undermine a rival.
It's another to mask your ignorance in such a disingenuous way, by using pseudo-scientific, emotion-laden arguments and trading on your professional credentials.
