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Synonyms

weedkiller

British  
/ ˈwiːdˌkɪlə /

noun

  1. a substance, usually a chemical or hormone, used for killing weeds

"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

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.

That would be Bayer, which makes the weedkiller Roundup.

From Slate • Jun. 25, 2026

The Supreme Court overturned a lower court’s decision, ruling that the weedkiller Roundup needs no cancer warning, boosting Bayer’s stock nearly 18%.

From Barron's • Jun. 25, 2026

The weedkiller has come under increasing scrutiny as Bayer, Roundup’s maker, has faced thousands of lawsuits alleging it failed to warn people the herbicide could cause cancer.

From Los Angeles Times • May 15, 2026

The results come as Bayer awaits the outcome of litigation over its Roundup weedkiller, including a proposed $7.25 billion settlement.

From The Wall Street Journal • May 12, 2026

Roundup weedkiller, which contains glyphosate, was originally developed by Monsanto in the 1970s.

From BBC • May 6, 2026

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