What is the meaning of Ardor?

Great warmth of feeling; fervor; passion.

Spirit; enthusiasm; passion.

Intense heat.

heat

ardor, passion

ardor, passion

flame, fire, heat

brightness, brilliancy (of the eyes)

ardour, eagerness, ardent desire

the object of ardent affection, love, flame

burning sensation

ardor (warmth of feeling)

spirit; enthusiasm

ardor/ardour

fervor, heat

passion

burning (feeling)

eagerness

Source: wiktionary.org