OBLIGATORY /əˈblɪɡət(ə)ɹi/ ► audio Scrabble 16 Words With Friends 18 Definition adjective morally or legally constraining or binding. adjective required by obligation or compulsion or convention. Examples “an obligatory promise” See all 308 words you can make from OBLIGATORY → 10-letter words Words starting with O Words ending with Y ← Unscramble different letters