不容 (bù róng) is a formal verb meaning 'cannot tolerate' or 'must not allow', used in written Chinese to emphasize that something is inherently unacceptable (e.g., facts that cannot be altered). Unlike 不许 (bù xǔ 'forbid') and 不得 (bù dé 'formal must not'), 不容 focuses on the impossibility of allowance rather than a prohibition. It also contrasts with 容忍 (róng rěn 'to tolerate') as its direct opposite.