A person or thing that brings life, energy, or liveliness to a situation.

जीवन्तता लाने वाला व्यक्ति या वस्तु

English Usage: The enlivener of the party was the DJ, who played everyone's favorite songs.

Hindi Usage: पार्टी का जीवन्तता लाने वाला व्यक्ति डीजे था, जिसने सभी के पसंदीदा गाने बजाए।