unilateral

/ˌjuːnɪˈlætərəl/ adjective

Definition

› done by only one of the groups, organizations, or countries involved in an activity or process: More than 70 developing countries have undertaken unilateral trade liberalization initiatives during the last 20 years. Opponents of the government have criticized the president's unilateral approach and believe broader international alliances are required. unilateral actions/decisions/concessions

unilaterally adverb › decisions taken unilaterally

(Definition of unilateral adjective from the Cambridge Business English Dictionary © Cambridge University Press)