strenuously

The duchess's legal team strenuously denied the allegation.

The musician, 55, has strenuously denied all the accusations against him, including the federal criminal case and more than 30 separate civil lawsuits.

When asked about the possibility that eliminating death will render life less important, Zeleznikow-Johnston strenuously disagrees.

That allegation was strenuously denied by Manson’s legal team, which eventually filed the complaint.

He has pleaded not guilty to all of the charges against him and strenuously denied any wrongdoing.