silence is consent
A lack of response to an action is a tacit approval of that action.
verb
To express willingness, to give permission.
After reflecting a little bit, I've decided to consent to her practising the piano in the house.
My poverty, but not my will, consents.
To cause to sign a consent form.
When the patient was consented to enter the study and registered, a telephone call was made to research assistant
To grant; to allow; to assent to.
Interpreters […] will not consent it to be a true story.
To agree in opinion or sentiment; to be of the same mind; to accord; to concur.
And Saul was consenting unto his death.
Flourishing many years before Wyclif, and much consenting with him in judgment.
noun
Voluntary agreement or permission.
All men know by experience, there be some parts of our bodies which often without any consent of ours doe stirre, stand, and lye down againe.
Unity or agreement of opinion, sentiment, or inclination.
And they all with one consent began to make excuse.
Advice; counsel.