Powerful, intense emotion
Passionate devotion to or interest in a cause or subject, for example
These animals will love and hate with equal fervor.
Consumers met the dolls with such fervor that the company couldn't keep up with demand.
The Twilight movie only added to the fan fervor.
Deidre took his face in her hands, hungrily trying to taste more of him as she explored his mouth with fervor.
Hoops and YoYo, with all their spunk and fervor, are an especially popular choice.