Lumpy/ˈlʌmpi/ Definition 1 of 2Pro Tip 1/3Texture Related The word 'lumpy' often describes textures, especially of foods or materials. She complained about the lumpy mashed potatoes. Pro Tip 2/3Negative Connotation 'Lumpy' usually implies something negative, as smoothness is often preferred. My new mattress is lumpy and uncomfortable. Pro Tip 3/3Visual Imagery Using 'lumpy' can help visualize items with irregular shapes or surfaces. The lumpy ice made skating difficult.