suppression
This term carries a heavy weight of authority and control. It suggests an external or internal force pushing something down to prevent it from emerging or continuing. There is an inherent tension in the word, implying that the thing being suppressed is still present but is being held under pressure. In psychological contexts, it refers to a conscious effort to push unwanted thoughts out of the mind. In technical or biological contexts, it describes the inhibition of a process, such as immune suppression, where a natural function is intentionally dampened to achieve a specific medical goal.
Countable when referring to a specific instance of stopping something, like the suppression of a particular riot. Uncountable when referring to the general process or a biological state, such as the systemic suppression of a hormone.