Suppress

verb

1. To put an end to, especially with force, to crush, do away with; to prohibit, subdue.

   "Political dissent was brutally suppressed."

2. To restrain or repress, such as laughter or an expression.

   "I struggled to suppress my smile."

3. To exclude undesirable thoughts from one's mind.

   "He unconsciously suppressed his memories of abuse."

4. To prevent publication.

   "The government suppressed the findings of their research about the true state of the economy."

5. To stop a flow or stream.

   "Hot blackcurrant juice mixed with honey may suppress cough."