cheinous Share definition Flag 1. Combination of the words 'chat' and 'heinous', usually used to describe someone or something that is gross or undesirable "mayn, her pussy smelt cheinous" "bruh, those fucking shoes are cheinous""eww...looks cheinous" cheinous by niggasmalls212 August 6, 2017 0 0 Get merch Get the cheinous mug. Buy Now — $32.95 See more merch