suppress

verb

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

  "Political dissent was brutally suppressed."

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

  "I struggled to suppress my smile."

• To exclude undesirable thoughts from one's mind.

  "He unconsciously suppressed his memories of abuse."

• To prevent publication.

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

• To stop a flow or stream.

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

• To forbid the use of evidence at trial because it is improper or was improperly obtained.
• To reduce unwanted frequencies in a signal.
• To hold in place, to keep low.