During meetings, Mark is often uncommunicative, preferring to listen rather than speak.

Her uncommunicativeness made it difficult to build trust within the team.

He sat uncommunicatively at the corner table, answering only when spoken to.

His uncommunal attitude kept him from joining the neighborhood potluck.

The uncommunicated terms of the agreement caused confusion among the team.

His uncommunicating demeanor made people hesitant to approach him.

Their prolonged uncommunication after the argument only made reconciliation harder.