The term 'Mood Lifter' can be summarized by the crossword solution of 'Prozac, ' which is a type of antidepressant medication. Prozac is a selective serotonin reuptake inhibitor (SSRI) that works to increase the levels of serotonin in the brain, which helps to improve mood and reduce symptoms of depression. It is commonly prescribed to treat depression, anxiety, and other mental health conditions.