Idioms
An idiom is a type of phrase or expression that has a meaning that can't be deciphered by defining the individual words.
Idiom:
to hell and gone
Meaning:
very much gone, gone to hell
Example:
The situation was already to hell and gone when the manager arrived at the office.
List of common idioms, their meanings and examples of their usage in sentences
A group of words which have a different meaning when used together from the one they would have if you took the meaning of each word separately.