"Tacit consent" refers to giving approval or agreement without explicitly saying so. It means when someone doesn't voice their disagreement or objection to something, it is assumed that they agree with it. Full definition
Instead, on one interpretation of what was recorded, he gave tacit consent on behalf of the Bank of England for Barclays to falsify their figures in the same way. (newlawjournal.co.uk)
All bad on this planet is created with the quiet tacit consent of the indifferent. (product-reviews.net)
Is silence tacit consent with Lindzen's activities, or is this silence a failure of moral behavior? (planet3.org)