Chronic granulomatous disease

With little or no sound; free of disturbing noise. / Having little motion or activity; calm. / Not busy, of low quantity. / Not talking much or not talking loudly; reserved. / Not showy; undemonstrative.

(transitive) To cause (someone or something) to become quiet. / (intransitive) To become quiet or calm.

The absence of sound; quietness. / The absence of movement; stillness, tranquility. / The absence of disturbance or trouble; peace, security.

Be quiet.

Inactive, quiet, at rest. / (orthography) Not sounded; silent. / (cell biology) Non-proliferating.

(intransitive, Britain) To become quieter. / (intransitive, Britain) To reduce intensity of an activity. / (transitive, Britain) To make someone or something become quieter.

(transitive) To make quiet. / (intransitive) To become quiet.

The state of being quiescent; dormancy. / Being at rest, quiet, still, inactive or motionless.

To remain silent. / (idiomatic) To refrain from talking about something; to keep a secret.