The phrase "attempt to denounce" is correct and usable in written English.
It can be used when describing an effort to publicly criticize or condemn someone or something.
Example: "The activist made an attempt to denounce the government's policies on climate change during the rally."
Alternatives: "effort to condemn" or "try to criticize".
Ryan is scrupulous in presenting the arguments of each thinker, making no attempt to denounce some as wicked and dangerous, or precursors of totalitarian regimes.
President Barack Obama had virtually no domestic constituency for his attempt to denounce the continued growth of settlements as unacceptable and as undermining a two-state peace at its core: land.
On Sunday, 150,000 demonstrators took to the streets of Paris in a last-ditch attempt to denounce the new law.
Several books have been written by the Right in a concerted attempt to denounce me.
Several statisticians quoted in the AP piece slam the climate skeptics who "cherry-pick" data in a "particularly suspect" attempt to denounce global warming.
In the midst of the spectacle, however, Luhrmann and his screenwriters, Stuart Beattie, Ronald Harwood, and Richard Flanagan, have attempted to denounce racism (Nullah is despised by the whites) and then to trace the beginnings of white respect for Aboriginal culture.
While the show does a decent job of showing the media firestorm and how quickly rumor becomes fact once it's been repeated on the evening news, I don't think it was attempting to denounce this so much as simply describe it.
Political prognosticators could have forecast this too: Yet another blustery attempt from President Trump to denounce the theory of man-made climate change because of the cold snap.
A coalition of 76 civil rights organizations has thus recently urged both the Republican and Democratic Parties to denounce attempts to have untrained citizen monitors positioned at or near polling centers on election day.
On Tuesday, the opposition brought hundreds of thousands of people into the streets to denounce his attempt to assert a power above the courts and over the Islamist domination of the assembly drafting the national charter.
Recent attempts by Muslim religious leaders to denounce terrorism in public in India are steps in the right direction.
