Dull/dʌl/adjectiveNot interesting or exciting.The movie was incredibly dull. Often appears as...a dull day a dull pain Definition 1 of 4Pro Tip 1/2Subjective Perception Considered dull by one person may be interesting to another; it's subjective. Some find chess dull, while others see it as fascinating. Pro Tip 2/2Emotion Conveyance Describes events or narratives lacking excitement or emotional involvement. The lecture was so dull I nearly fell asleep.