The term 'BIG BUILDUP' can be summarized by two crossword solutions: HYPE (4 letters) and HOOPLA (6 letters). HYPE is a term used to describe an intense promotion of a product or event, usually through the use of exaggerated claims and enthusiastic language. HOOPLA is a term used to describe a situation of great excitement and activity, often accompanied by loud noise and commotion. Both terms are used to describe a situation of heightened anticipation and enthusiasm.