The phrase "firmly condemn" is correct and usable in written English.
It can be used when expressing a strong disapproval or denunciation of an action, behavior, or event.
Example: "The organization firmly condemns any form of violence against innocent civilians."
Alternatives: "strongly denounce" or "categorically reject."
The EU diplomats "firmly condemn" all attacks on civilians, Israeli and Palestinian.
Most Tunisians firmly condemn the violence that took place against the United States embassies, even if they were personally offended by anti-Islamic provocations emanating from the United States and Europe.
A statement on Saturday said: "We firmly condemn this violation and we demand the democratic council to release immediately the president of the local council of the city of Aleppo and to explain this precedent and to offer official excuses".
"What is clear is that all South Africans should firmly condemn anyone who resorts to violence and murder to promote his cause," Mr. de Klerk said in a statement.
On Wednesday, during his weekly address at the Vatican, Pope Benedict XVI said, "I firmly condemn any attack on human life," and said that he was "profoundly saddened" by the violence in Orissa.
On one hand, the attacks on the newspaper and the kosher supermarket, which I firmly condemn without the slightest hesitation.
Dago firmly condemned squandering money (anag. less m).
Two years ago he firmly condemned fellow Republicans "who preach pragmatism, who champion conciliation, who counsel compromise".
But President Obama firmly condemned the coup, defusing Mr. Chávez's charges.
Despite his republican views, Gioberti never joined the revolutionary organization of Giuseppe Mazzini, and by 1840 he was firmly condemning violence as a means to Italian unity.
The administration firmly condemned the moves, but Mr. Obama needs develop a new strategy for reviving peace talks, even though many despair of any success.
