An idiom is a widely used saying or expression containing a figurative meaning that differs from the phrase's literal meaning.
Idiom:
have it in for (someone)
Meaning:
to show ill will to someone, to dislike someone
Example:
I have been having problems at work recently. I think that the new supervisor has it in for me.
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.