answerbook
nounUK /ˈɑːnsəbʊk/
US /ˈænsərbʊk/
A book that has the answers to questions or exercises.
The teacher kept the answerbook on her desk.
OTHER MEANINGS
2. A book of correct responses used to grade tests or homework.
She checked the quizzes against the answerbook.
3. A reference book that lists answers to common questions.
He looked up the trivia question in the answerbook.
4. A collection of solutions for puzzles or riddles.
The crossword answerbook helped him finish the puzzle.