in a nutshella linking phrase meaning 'to summarise; in short'In a nutshell, the success of any education reform depends on adequate teacher training.NoteIn a nutshell, the success of any education reform depends on adequate teacher training.Elon.io is an online learning platformWe have an entire course teaching IELTS Vocabulary — Band 7+ grammar and vocabulary.Start learning IELTS Vocabulary — Band 7+ now