suppression

American  

[suh-presh-uhn] / səˈprɛʃ ən /

noun

1. the act of suppressing.

2. the state of being suppressed.

3. Psychoanalysis. conscious inhibition of an impulse.

4. Botany. the absence of parts normally or usually present due to the action of frost, disease, or insects.

5. Radio, Electronics. the elimination of a component of a varying emission, as the elimination of a frequency or group of frequencies from a signal.

6. Electricity. the reduction or elimination of irregular current oscillations or frequencies in a circuit.

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suppression British  

/ səˈprɛʃən /

noun

1. the act or process of suppressing or the condition of being suppressed

2. psychoanal the conscious avoidance of unpleasant thoughts Compare repression

3. electronics the act or process of suppressing a frequency, oscillation, etc

4. biology the failure of an organ or part to develop

5. med the cessation of any physiological process

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Other Word Forms

• nonsuppression
  noun
• resuppression
  noun
• self-suppression
  noun

Etymology

Origin of suppression

First recorded in 1520–30; from Latin suppressiōn-, stem of suppressiō “a pressing under”; equivalent to suppress + -ion

Explanation

Suppression is the act of keeping something from happening — like the suppression of your laughter when your best friend passes you a funny note in class. In psychology, suppression is the act of stopping yourself from thinking or feeling something. It is generally presumed to be ineffective because even if you suppress or hold back an emotion, like anger, that feeling returns with a vengeance. Suppression can also mean the act of holding something else back, like the suppression of a book from publication because you don't like its message.

Example Sentences

Today, black voter registration in the South, where black voter suppression was most pronounced in the Jim Crow era, is higher than in other regions of the U.S.

From The Wall Street Journal • May 5, 2026

"Differences between the two sides must be handled through peaceful and equal means, rather than by using suppression and intimidation," spokesman Lee Kuen-cheng said.

From Barron's • Apr. 10, 2026

This breakthrough could eventually support the development of new treatments that take advantage of the nutrient's roles in memory, learning, and cancer suppression.

From Science Daily • Apr. 7, 2026

Used for lactation suppression, nutrition, a cute hat or coleslaw.

From Los Angeles Times • Apr. 1, 2026

The team’s task was to open a valve that would allow steam to escape from the suppression pool through a pipe to the outside.

From "Meltdown" by Deirdre Langeland

Related Words

• elimination
• overthrow