Mania/ˈmeɪniə/ Definition 1 of 4Pro Tip 1/2Current Trends Use 'mania' to describe widespread enthusiasm in current trends or fads. Everywhere you look, there's plant mania among gardeners. Pro Tip 2/2Exaggerated Interest 'Mania' signifies an interest that is stronger and more obsessive than usual. His puzzle mania keeps him occupied for hours.