Wildfires also emerged at tough-to-control voracity [və˞ˈɹæsəti, (NOT veracity)] and speed, ravaging hundreds of thousands of acres across southern Europe and the U.S. Pacific Northwest.

voracity (NOT veracity)
noun [və˞ˈɹæsəti]

1) an immoderate eagerness or enthusiasm for something
2) an intense desire to eat or consume something.

Voracity comes to us (via Middle French) from the Latin word voracitas, which itself comes from the combining of vorax, meaning “voracious,” with -itas, the Latin equivalent of the English noun suffix -ity.

voraciousness also works

English