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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Before assuming the new borrowing limits apply to you, talk with your financial aid office.
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Above, her mother’s brother, Abdullahi Mohamed, cradled a cup of tea in his hands and talked to her parents about their Central Avenue community, the news of the day and the global events that dominated the early 2000s.
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And a $208 million Rural Health Transformation award now lets Arkansas confront the maternity care deserts the national conversation overlooks—because when the nearest delivery unit is an hour away, distance itself is a risk factor.
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No matter how crowded or deserted your beach may be, being mindful of others will go a long way in creating an enjoyable day for you and all your fellow beachgoers.
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There appears to be no clear association between these two lists, although the contaminant list is supposed to inform the monitoring list.
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Marcia Kimpton's hotel tips Kimpton’s upbringing informed her approach to selecting hotels.
Verb
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Those seeking to stop the roundup reject almost all of the federal agencies’ claims, from the size of the herd to the notion that the horses cause ecological damage.
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While state studies have criticized the state’s education governance model, voters have rejected at least four attempts dating back to 1928 to reform the position.
Verb
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According to the American Medical Association, 78% of physicians report that prior authorization delays have led patients to abandon recommended treatment.
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Later that day, deputies found her van abandoned in a field near Interstate 95, but Graham had seemingly vanished without a trace.
Verb
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Mysterio tripped Page onto the second rope, but Page cut off Rey Mysterio with a big boot as Rey attempted a 619.
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Soon after then-President Nicolás Maduro was captured by the US in January, Venezuela ended Cuba’s long-standing medical mission in the country, cutting off a key resource in underserved communities.
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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 6 Jul. 2026.
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