ハイアラーキーalso: ハイアラーキMeanings1nounhierarchyA loanword from English, used in similar contexts as ヒエラルキー but less common. Often refers to organizational or social ranking structures.See also: ヒエラルキー会かい社しゃのハイアラーキーは厳げん格かくだ。The company's hierarchy is strict.