The term ENERGIZE, WITH 'UP' can be solved by the crossword solutions LIVEN (5 letters), PEP (3 letters), and AMP (3 letters). LIVEN means to make something more lively or cheerful, PEP is an informal term for energy or enthusiasm, and AMP is an abbreviation for ampere, a unit of electrical current. Therefore, the term ENERGIZE, WITH 'UP' can be interpreted as making something more lively, enthusiastic, or electrically charged.