The term 'UP (REINFORCE)' can be solved by the crossword solution 'SHORE'. The term 'SHORE' is a noun that refers to the land along the edge of a body of water, such as an ocean, lake, or river. It is also used to describe the act of reinforcing or strengthening something, such as a structure or a belief. In this context, it implies that something is being reinforced or strengthened in order to make it more secure.