Tedium/ˈtiːdiəm/ Definition 1 of 1Pro Tip 1/3Often Negative Tedium carries a negative feeling and suggests a lack of excitement. The lecture's tedium was evident on all the yawning faces. Pro Tip 2/3Not Temporary Tedium often implies a prolonged experience, not just a brief moment of boredom. She felt a deep tedium while copying data all day. Pro Tip 3/3Emotionally Draining Tedium can be emotionally draining and exhausting over time. Hours of silence filled the room, the tedium taking its toll.