Inextinguible (en. Inextinguishable)

/ineks.tingˈi.βle/

Slang Meanings

Unyielding
His desire was inextinguishable, like a fire that would never go out.
Su deseo era inextinguible, como un fuego que nunca se apagaría.
Tireless
It's an unyielding job; he never gives up.
Es un trabajo inextinguible, nunca se rinde.