Leaving cold can be described with a variety of antonyms depending on the context. For instance, one antonym might be "welcoming," which means to receive someone with warmth and kindness. Another possible antonym for leaving cold is "embracing," which refers to a warm and affectionate hug or welcome. Alternatives could also include "inviting," "hearty," or "friendly."
On the other hand, if the term leaving cold is used to describe a lack of emotional or physical response, antonyms could be "passionate," "enthusiastic," or "excited." In this context, one might use words such as "animated," "ardent," or "vivid" as antonyms.