Idioms
Idioms can be a powerful linguistic tool only when they are used in the right way in the right places.
Idiom:
set in
Meaning:
to begin and probably continue (used for a weather or mental condition)
Example:
The rain has set in and it looks like it will not stop. A mild depression has set in for my neighbor
List of common idioms, their meanings and examples of their usage in sentences
An idiom is defined as - a group of words in a fixed order that has a particular meaning that is different from the meanings of each word on its own.