introvert
/ˈɪn.trə.ʊrt/Definitions
1. noun
A person who tends to prefer being alone, avoiding social situations, and often preferring quieter, more low-key environments.
“As an introvert, she prefers working from home instead of in an open office space.”
2. verb
To turn inward or become more reclusive, often in response to external stress or overstimulation.
“After the intense party, she introverted and spent the rest of the night in her room.”