[adjective] [after verb], [adverb] [not gradable] [esp. [formal] or humorous] - not communicating with anyone else because you do not want to or you are not allowed toWe wanted to invite you to the wedding, but you were incommunicado and we had no idea how to contact you.He was held incommunicado for the first 48 hours after he was arrested.
INCOMMUNICADO
Meaning of INCOMMUNICADO in English
Cambridge English vocab. Кембриджский английский словарь. 2012