pyschopathical Share definition Flag A combination of the words pyschopath and pathological to emphasize how someone is both crazy and compulsive. Rachel called Aidan a pyschopathical liar because of how mad she was at him. pyschopathical by aidankdajkfjkl12 August 18, 2021 0 0 Get merch Get the pyschopathical mug. Buy Now — $32.95 See more merch