get to the bottom ofto solve or explain something that was previously unclearInvestigators are determined to get to the bottom of the financial irregularities.NoteInvestigators are determined to get to the bottom of the financial irregularities.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