Whooping it up is an expression that means to celebrate or have a good time. It can involve PARTYING, dancing, singing, and other activities. The two crossword solutions for this term are PARTYING and JUBILANT. PARTYING is an activity that involves having fun with friends and family, usually involving music, dancing, and food. JUBILANT is an emotion of great joy and happiness. Together, these two words describe the act of whooping it up, which is celebrating and having a good time.