exuberant
adj.adj. showing a lot of energy and excitement. You use this to describe someone who is very happy and full of life.
adj. characterised by or displaying great energy, enthusiasm, or excitement. Often used to describe a person's emotional state or a physical display of joy.
The children were exuberant after winning the game.
The exuberant crowd cheered loudly as the team entered the stadium for the final match.
Despite the initial skepticism of the board, the exuberant young CEO's vision for the company eventually led to a significant increase in market share.
From Middle French exubérant, from Latin exūberāns, the present active participle of exūberō (“be abundant”). Put together from ex (“out”), and uber (“udder”), and originally would have referred to a cow or she-goat which was making so much milk that it naturally dripped or sprayed from the udder.