"vehemently challenged" is a grammatically correct and usable phrase in written English.
It means to challenge or dispute something with intense passion or conviction. Example: The controversial decision of the court was vehemently challenged by the defense attorney, causing a heated debate in the courtroom.
Stem cell scientists, particularly those pursuing hybrid embryo research, vehemently challenge the study's conclusions.
The official response vehemently challenges the Senate's allegation that the spies acted outside the limits of what the White House had allowed the agency to do.
The Democratic National Convention nominated Humphrey after he had been challenged earlier that year by Robert Kennedy and Eugene McCarthy; both were vehemently opposed to the war.
Idaho militia members and Branch Davidians challenge social norms as vehemently as any of the record-store clerks, music scenesters and sex workers Powers interviews, and are probably less palatable to the mainstream.
The unions and the left in general vehemently oppose any challenge to the current labor law, which effectively guarantees most workers lifetime job security.
This means a sex worker or an offended poster could complain, but only in a way that doesn't challenge the status quo here, which is vehemently pro- punter".
John McDonnell, the MP for Hayes and Harlington, is vehemently opposed to expansion and said a legal challenge could block a BAA application taking place before a general election, which has to be called by May 2010.
Some lawyers say the president is vehemently opposed to Mr. Chaudhry's comeback because he fears a new judicial challenge to his re-election.
In essence, the agreement would maintain the rights Fox argued vehemently for and would let the Dodgers pursue a TV deal without further legal challenges by Fox.
