1
as in to split (on)
to give information (as to the authorities) about another's improper or unlawful activities
how much—or how little—did the fuzz have to pay you to rat on us?
Synonyms & Similar Words
Relevance
2
as in to desert
to leave (a cause or party) often in order to take up another
many party operatives ratted on the senator's candidacy once her poll numbers started to slip
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for rat (on)
Verb
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Disease Is the Even Bigger Problem Competition for food is a serious concern on its own, but disease transmission is what wildlife officials consider the greater threat to desert bighorn sheep survival.—
Hanna Wickes,
Miami Herald,
27 Apr. 2026 -
Idle oil wells cleanup Senate Bill 47 raises the cap on how much money from the Oil, Gas, and Geothermal Administrative Fund can be spent to plug and cleanup deserted oil wells, according to the California State Senate website.—
Veronica Fernandez-Alvarado
April 22,
Sacbee.com,
22 Apr. 2026
Verb
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But past royal visits to Washington have sometimes gone awry − from amorous muskrats to a talking hat.—
Susan Page,
USA Today,
27 Apr. 2026
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Before talking to the group, McFadden asked them to take a few minutes to interact.—
Steve Sadin,
Chicago Tribune,
27 Apr. 2026
Verb
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The court rejected the argument, concluding that a prospective rate hearing — unlike that on the response time — would be considered contested and the utility would have the opportunity to challenge the finding of imprudence then.—
Edmund H. Mahony,
Hartford Courant,
29 Apr. 2026
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The legislation passed with broad bipartisan support in the Senate, but some Republicans rejected the bill, opposing earmarking millions more to maintain the fortified Capitol and equip it with the staff necessary to keep the screenings going.—
Caroline Cummings,
CBS News,
28 Apr. 2026
Verb
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Heorhii Tykhyi, a spokesman for Ukraine’s Foreign Ministry, said Kyiv had informed Israeli authorities about the vessels in advance.—
Los Angeles Times,
Los Angeles Times,
28 Apr. 2026
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Luckily, the hunters brought the deer to a butcher who then informed EnCon police.—
Stephen Underwood,
Hartford Courant,
28 Apr. 2026
Verb
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If the Eagles don’t fully abandon that style, Campbell could fit in nicely.—
Brooks Kubena,
New York Times,
25 Apr. 2026
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Just a few years later, in the fall of 2019, mountaineer Garrett Madison abandoned an Everest expedition due to another serac causing unsafe conditions in the Khumbu Icefall.—
Jessie Yeung,
CNN Money,
24 Apr. 2026
Verb
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Skydio has warned against relying on international suppliers after the drone maker was cut off from its supply of Chinese batteries when it was blacklisted by Beijing in October, the Wall Street Journal reported.—
Itzel Luna,
Los Angeles Times,
28 Apr. 2026
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The war has also cut off jet fuel supplies.—
Steve Kopack,
NBC news,
28 Apr. 2026
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Cite this Entry
“Rat (on).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/rat%20%28on%29. Accessed 2 May. 2026.
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