incommunicado
adjective [ after verb ], adverb formal uk/ˌɪn.kəˌmjuː.nɪˈkɑː.dəʊ/ us/ˌɪn.kəˌmjuː.nɪˈkɑː.doʊ/
不愿（或不得）与他人接触的
not communicating with anyone else because you do not want to or are not allowed to
His secretary says he will be incommunicado for the rest of the day. 他的秘书说他当天余下的时间都没空。
He was held incommunicado for the first 48 hours after he was arrested. 他被捕后的最初48小时被禁止与外界接触。