verschlossen
Verschlossen is a German adjective and past participle derived from the verb verschließen, meaning to close or to lock. It denotes that something has been closed, sealed, or locked, and it can also describe a person who is emotionally reserved or unapproachable. In physical contexts one speaks of a verschlossene Tür (the closed/locked door) or a verschlossener Raum. In a figurative sense, a person can be described as verschlossen, meaning they tend not to reveal thoughts or feelings.
The word is formed from verschließen with the participle suffix and the prefix ver-, which in this
Nuance and usage: Verschlossen often implies a deliberate or established closing, such as a locked container
Translations and related terms: In English, verschlossen is usually translated as "closed" or "locked" for objects,