introverse
/ˈɪn.trə.vərt/Definitions
1. noun
A person who tends to be quiet and prefers to be alone rather than in the company of others.
“She was an introvert and preferred to spend time reading books alone rather than going to parties.”
2. adjective
Relating to or characterized by introversion.
“Introvert children often find it difficult to interact with their peers during group projects.”