The term 'SMARTENED UP' can be broken down into three crossword solutions: WISER, WISED, and SPRUCED. WISER is an adjective meaning having or showing experience, knowledge, and good judgment. WISED is a verb meaning to become aware of or informed about something. SPRUCED is a verb meaning to make oneself or something look neat, tidy, and attractive. Therefore, the term 'SMARTENED UP' can be interpreted as becoming WISER, more informed, and more presentable.