An expression in the usage of a language that is peculiar to itself either in having a meaning that cannot be derived from the conjoined meanings of its elements or in its grammatically atypical use of words.
a situation which contradicts itself, a paradoxical situation
It was a catch-22 situation. If I went to work there would be problems but if I did not go to work there would also be problems.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is a widely used saying or expression containing a figurative meaning that differs from the phrase's literal meaning.