Which term refers to the act of intensifying or enriching an experience?

The term that best refers to the act of intensifying or enriching an experience is "enhancing." This term implies improving or augmenting something to make it better or more effective. When you enhance an experience, you are significantly adding value or depth, resulting in a richer and more satisfying outcome for those involved.

While other terms can convey a similar notion, they may have nuanced meanings that do not align perfectly with the definition of intensifying or enriching. "Spicing up" often suggests adding excitement or variety, but not necessarily depth. "Elevating" can indicate raising something to a higher status or level, which may not directly correlate with enhancing the experience itself. "Embellishing" typically means adding decorative details, which could improve an experience but focuses more on aesthetics than the overall enrichment of the experience. Therefore, "enhancing" is the most precise term for indicating the act of intensifying or enriching an experience.