► 動詞
惚ける [(2)ぼける] meaning: dementia rank: 2
☆ 惚けた老人 ⇨ A senile old person
耄碌 [(1)もうろく] [耄碌する] meaning: dementia rank: 3
☆ 耄碌した爺 ⇨ A senile old dude (☛ Disapproving)
惚ける [(3)ほうける] meaning: dementia rank: 5
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► 名詞
認知症 [にんちしょう] [tech] meaning: dementia rank: 2
☆ 彼の父親は認知症に掛かった ⇨ His father is suffering from dementia (☛ Literally means “recognition (loss) condition”. Became the official term to replace 痴呆症 which is today considered discriminatory)
痴呆 [ちほう] [tech] meaning: dementia rank: 3
☆ 痴呆症 ⇨ Dementia (☛ Today considered pejorative and in 2004 publicly replaced by 認知障害 as an official term)