Idioms can be a powerful linguistic tool only when they are used in the right way in the right places.
Idiom:
get off (someone's) back
Meaning:
to leave someone alone and not bother him or her
Example:
I wish that my supervisor would get off my back.
List of common idioms, their meanings and examples of their usage in sentences
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.