ardor

Noun

• feelings of great warmth and intensity
  • he spoke with great ardor
    

• intense feeling of love

• a feeling of strong eagerness (usually in favor of a person or cause)
  • they were imbued with a revolutionary ardor
    
  • he felt a kind of religious zeal
    

Related words

• Synonyms: 
  ardour , fervor , fervour , fervency , fire , fervidness , elan , zeal