uncommunicative
US /ˌʌn.kəˈmjuː.nə.kə.t̬ɪv/
UK /ˌʌn.kəˈmjuː.nə.kə.t̬ɪv/

1.
pouco comunicativo, reservado, calado
not inclined to talk or give information; silent or reserved.
:
•
He became withdrawn and uncommunicative after the accident.
Ele se tornou retraído e pouco comunicativo após o acidente.
•
Her uncommunicative nature made it difficult to get to know her.
Sua natureza pouco comunicativa dificultava conhecê-la.