withdrawn
v. C1 Advanced US //wɪðˈdɹɔn// UK //wɪðdɹˈɔːn// with·drawn
v. very quiet and not wanting to talk to other people. You might act this way if you are feeling shy, sad, or thoughtful.
v. socially detached and unresponsive to others. Often used to describe a psychological state where an individual retreats into their own thoughts or feelings.
He became very withdrawn after he lost his job.
The teacher noticed that the usually talkative student had become withdrawn and rarely participated in class discussions.
Clinical observation suggests that patients may become increasingly withdrawn as a defense mechanism against overwhelming external stimuli or emotional trauma.
Usage
Primarily used as a predicative adjective following verbs like 'become', 'seem', or 'remain'.