TEXTBOOK /ˈtɛkst.bʊk/ ► audio Scrabble 21 Words With Friends 22 Definition adjective according to or characteristic of a casebook or textbook. — synonyms: casebook noun a book prepared for use in schools or colleges. — synonyms: text, text_edition, schoolbook, school_text See all 36 words you can make from TEXTBOOK → 8-letter words Words starting with T Words ending with K ← Unscramble different letters