Ardencies refer to intense passion or fervor for something or someone. The antonyms for ardencies would be indifference, apathy, coldness, frigidity or impassiveness. These words portray a lack of interest or emotion towards a particular subject or person. Indifference is the opposite of ardencies as it refers to a lack of concern or interest towards something. Apathy also carries the same meaning as indifference. Coldness and frigidity, on the other hand, refer to a lack of warmth or affection towards someone or something. Impassiveness suggests a lack of emotional response or reaction. In contrast to ardencies, these antonyms indicate a lower level of intensity, emotion and passion.