Related Clues:

• Intense heat
• It may cool over time
• Strong passion
• Intense feeling of love
• Earnestness
• Strong spirit
• Warmth of Nabokovian subtitle
• Passion (var.)
• Feeling of great warmth
• Fervid feeling
• Zeal (var.)
• Strong devotion
• Passionate feelings
• Intense vigor
• Intense devotion or passion