The crossword solution for the term 'Sidelines Shout' is RAH. This is an acronym for the phrase 'Rah Rah, ' which is a cheer or shout of encouragement used by spectators to show their support for a team or individual. It is often used in sports, such as football and basketball, to motivate players and give them a boost of energy. The term is also used in other contexts, such as during speeches or presentations, to show enthusiasm and support.