ˈfilēəl also -lyəl adjective
Etymology: Middle English, from Late Latin filialis, from Latin filius son + -alis -al — more at feminine
1. : of or relating to a son or daughter ; especially : becoming to a child in relation to his parents
filial obedience
2. : bearing or assuming the relation of a child or offspring
• fil·ial·ly -ēəlē, -yəlē, -li adverb
• fil·ial·ness -əlnə̇s noun -es