愚痴【ぐち】
idle complaint, grumble, moha (ignorance, folly)
痴漢【ちかん】
molester, groper, masher, pervert, fool, idiot
痴呆【ちほう】
dementia
音痴【おんち】
tone deafness, amusia, having no ear for music, having no sense of (e.g. direction), being hopeless when it comes to (e.g. computers), -illiterate
白痴【はくち】
idiot, retard, idiocy, profound mental retardation
痴呆症【ちほうしょう】
dementia