The term 'HUGE PARTY' can be broken down into two crossword solutions: BASH (4 letters) and FEST (4 letters). BASH is a slang term for a large, lively party or celebration. It is derived from the word 'BASHFUL, ' which means to be embarrassed or shy. FEST is short for festival, which is an event or gathering of people to celebrate something. A huge party could be a combination of both a BASH and a festival, with lots of people, music, food, and fun.