An idiom is a widely used saying or expression containing a figurative meaning that differs from the phrase's literal meaning.
a con artist, a clever talker who convinces others easily
The man is a fast talker and you should be careful not to believe everything that he says.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is a type of phrase or expression that has a meaning that can't be deciphered by defining the individual words.