Manic depressive is a term that is now outdated and considered offensive. It is commonly referred to these days as Bipolar disorder. Bipolar disorder is a mental illness characterized by extreme mood swings ranging from high-energy manic episodes to low-energy depressive episodes. Some synonyms for Bipolar disorder include bipolar affective disorder, manic-depressive illness, bipolar disease, and bipolar syndrome. These terms accurately describe the condition and reflect the medical language that is commonly used to talk about mental health. It is important to use appropriate language when discussing mental health in order to reduce stigma and promote understanding of these complex conditions.