ardor

definition: feelings of great warmth and intensity
example: I spoke with great ardor.
speech part: noun
synonyms: fire
definition: intense feeling of love
example:
speech part: noun
synonyms: ardour
definition: a feeling of strong eagerness (usually in favor of a person or cause)
example: they were imbued with a revolutionary ardor
speech part: noun
synonyms: elan

How ardor is being used?