manic

adj (of a person, his moods, etc) changing quickly and often between extremes of depression and cheerfulness （指人、 心态等）躁狂的, 喜怒无常的, 狂热的.

mandrill, mane, maneuver, manful, manfully, manganese, mange, mangel-wurzel, manger, mangle, mango, mangrove, mangy, manhandle, manhole, manhood, mania, maniac, maniacal, maniacally, manic-depressive, manicure, manicurist, manifest, manifestation, manifestly, manifesto, manifold, manikin, Manila (also Manilla), manioc, manipulate, manipulation, manipulative, manipulator, mankind, manliness, manly, manna, manned,