"To be taken in" means to be tricked or fooled.
"You" is not an idiom. It is a pronoun.
The idiom "I'm with you" means that you understand and support someone's point of view or actions. It expresses solidarity or agreement with the other person.
Unrealistic, immature.
to support
She was full of an emotion.
Idiomatic Expressions are sayings that are commonly used but their meanings cannot be determined by the individual words in the saying itself. Below you will find an alphabetical list of idiomatic expressions
hatchet.isthebig.lothing.now
It means to get married.
Listening with interest.
pleasant and easy....
The idiom "killing an ant with a sledgehammer" means using excessive force or resources to address a minor or insignificant issue. It implies a disproportionate or overly aggressive response to a small problem.
pick up - idiomatic meaning is to learn something without much effort. I picked up Spanish when I lived in Madrid.