- 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"
- intense feeling of love
- feelings of great warmth and intensity; "he spoke with great ardor"
- Ardor is the second album by Love Spirals Downwards, an Ethereal band on the US record label, Projekt. It was originally released in 1994; a remastered version, with extra tracks, was released in 2007.
- Ardor , is a 2002 South Korean film directed by Byun Young-Ju. It stars Yunjin Kim of Lost fame.
- Great warmth of feeling; fervor; passion; Spirit
- the quality that distinguishes love without knowledge.
- warm interest for something/someone