fervor

(noun) feelings of great warmth and intensity. Synonyms: ardor, ardour, fervour, fervency, fire, fervidness. Examples: "He spoke with great ardor."

(noun) the state of being emotionally aroused and worked up. Synonyms: excitement, excitation, inflammation, fervour. Examples: "His face was flushed with excitement and his hands trembled." "He tried to calm those who were in a state of extreme inflammation."