The term ENERGISE is defined as to give energy or strength to someone or something. This can be done in a variety of ways, such as INVIGORATE (10 letters), which means to give life, vigor, or spirit to; AROUSE (6 letters), which means to stir up or awaken; REINVIGORATE (12 letters), which means to give new life or vigor to; EXCITE (6 letters), which means to stir up or AROUSE; ANIMATE (7 letters), which means to make alive or lively; and INNERVATE (9 letters), which means to stimulate or activate. All of these words are related to the term ENERGISE and can be used to describe the act of giving energy or strength to someone or something.