mEANING :
Contrary to the definition of pre, reserved is a characteristic of a person whom socializes sparingly.
It is shown not out of inability to converse or work with others, but instead permits them to be self-aware of whom the talk to, what they talk about, when they talk, where they talk, why they talk and how they talk to people.
A reserved person may speak less in groups, because they prefer to listen to what is being said, and who is saying it.
When they have phrased a contribution to a discussion, it’s generally well thought out.
Reserved people garner the respect of their peers and do not seek to offend intentionally.
As opposed to an anti-social or asocial person, reserved people do know how to talk to their peers and delight in interactions, although very brief.