Meaning of the word "smell a rat" in English

What does "smell a rat" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

smell a rat

US /smɛl ə ræt/
UK /smɛl ə ræt/
"smell a rat" picture

Idiom

1.

to suspect that something is wrong or that someone is trying to trick you

Example:
When he offered to pay for everything, I started to smell a rat.
The police smelled a rat when the suspect's story kept changing.
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