jubilean
/ˌdʒuːbɪˈliːɪən/Definitions
1. adjective
relating to or characteristic of a jubilee, or a period of great celebration or rejoicing
“The jubilean atmosphere filled the entire stadium as the team won their championship.”
2. noun
a person or thing that is jubilean
“The jubilean couple was surrounded by friends and family on their 50th wedding anniversary.”