Noncommunicative
Noncommunicative is an adjective used to describe someone or something that does not engage in communication or that does not convey information in a given context. It can refer to a person who is reticent or unresponsive, a group that withholds information, or a system or interface that lacks messaging capabilities or a signal channel.
The term implies an absence of communication in contrast with communicative. It does not specify the cause;
Etymology: noncommunicative is formed from the prefix non- plus communicative, itself from the Latin communicare, meaning
Related terms include uncommunicative, incommunicable, and nonverbal. Uncommunicative emphasizes an inclination or habit of not speaking;