The term 'CHEER START' can be broken down into five crossword solutions: SIS (3 letters), VIVA (4 letters), HIP (3 letters), OLE (3 letters), and BOO (3 letters). SIS is an informal term for sister, and is often used as a cheer to show support for a female friend. VIVA is a Spanish word meaning 'long live, ' and is often used as a cheer to show enthusiasm for a person or cause. HIP is an informal term for HIP-hip-hooray, and is used to express joy and excitement. OLE is a Spanish word meaning 'BRAVO, ' and is used to show approval or admiration. Finally, BOO is an exclamation used to express disapproval or contempt. All of these words are commonly used in cheers to show support or enthusiasm for a person or cause.