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suppressant

American  
[suh-pres-uhnt] / səˈprɛs ənt /

noun

  1. a substance that suppresses an undesirable action or condition.

    an appetite suppressant.


suppressant British  
/ səˈprɛsənt /

adjective

  1. tending to suppress or restrain an action or condition

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a suppressant drug or agent

    a cough suppressant

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of suppressant

1940–45; suppress ( def. ) + -ant

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He went on to say that there was "insufficient fire suppressant that could be put onto an aircraft if needed".

From BBC • Feb. 9, 2026

The Aviation Safety Network, which tracks airline accidents, published photos of the damaged plane in a grassy field surrounded by fire suppressant foam on X, formerly known as Twitter.

From Seattle Times • May 9, 2024

They attached 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, which is a fire suppressant molecule called DOPO, into the backbone of the lignin polymer.

From Science Daily • Oct. 17, 2023

Researchers from the Food and Drug Administration authored an article in the journal Pediatrics that warns parents against giving young children cough suppressant medications.

From Washington Post • Dec. 15, 2022

CCK also travels to the brain, where it can act as a hunger suppressant.

From Textbooks • Jun. 19, 2013