HIERARCHY /ˈhaɪ.ə.ɹɑː(ɹ).ki/ ► audio Scrabble 20 Words With Friends 18 Definition noun a series of ordered groupings of people or things within a system. noun the organization of people at different ranks in an administrative body. — synonyms: power_structure, pecking_order See all 113 words you can make from HIERARCHY → 9-letter words Words starting with H Words ending with Y ← Unscramble different letters