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Synonyms

rat on

Idioms  
  1. Betray a comrade by giving information, as in He ratted on his best friend to the police. [Slang; early 1900s]


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 is also loyal and refuses to rat on someone who can prove his innocence.

From Salon • Sep. 6, 2024

In an interview in 2000, he remembered cornering a large rat on the staircase of his communal apartment block.

From BBC • Mar. 14, 2024

Santer says his son felt unsafe at home after someone left a dead rat on his doorstep.

From Science Magazine • Mar. 23, 2022

The woman in this shot was called Miriam, and the rat on her shoulder is called Bestia.

From The Guardian • Jul. 31, 2019

“You don’t know how big a rat on the loose can get in five months,” he said.

From "The Wednesday Wars" by Gary D. Schmidt

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