treasonthe crime of betraying one's country, especially by attempting to overthrow the governmentThe general was tried for treason after conspiring with foreign agents to undermine the state.NoteThe general was tried for treason after conspiring with foreign agents to undermine the state.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