Which Harry Potter novel was the first to use the word “Deathly” in its title?

Harry Potter and the Deathly Hallows was the first Harry Potter novel to use the word “Deathly” in its title.

Published in 2007, it is the seventh and final novel in J.K. Rowling’s Harry Potter series. The title refers to three legendary magical objects: the Elder Wand, the Resurrection Stone, and the Cloak of Invisibility. Together, these objects are called the Deathly Hallows.

The book follows Harry, Ron, and Hermione as they leave Hogwarts to find and destroy Voldemort’s Horcruxes. Its title therefore connects two major story threads: the hunt for the objects that can defeat death and the effort to destroy the fragments preserving Voldemort’s life.

The novel was published in the United Kingdom on 21 July 2007. It was followed by two film adaptations, released in 2010 and 2011, with the second film concluding the main story.