Manic/ˈmænɪk/ Definition 1 of 2Pro Tip 1/3Emotional Charge Manic implies extreme behaviours driven by emotions, not just high energy. The crowd was manic with joy after the victory. Pro Tip 2/3Uncontrolled State Use 'manic' to suggest a loss of control, almost like a frenzy. The stock market had a manic day, with people buying and selling in a panic. Pro Tip 3/3Possible Negative 'Manic' can be positive or negative, often depending on if it's unwelcome or excessive energy. His manic enthusiasm at 3 a.m. was not appreciated.