unilateralperformed by or affecting only one party or countryThe unilateral withdrawal of troops was criticised for undermining the multilateral peace agreement.NoteThe unilateral withdrawal of troops was criticised for undermining the multilateral peace agreement.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