Junior (en. Junior)
/ˈdʒuː.njər/
Slang Meanings
Colloquial way of referring to someone who behaves immaturely.
Stop acting like a junior and take on more responsibilities.
Deja de actuar como un junior y asume más responsabilidades.
Term used in some contexts to refer to someone in a lower position.
That guy is a junior; you can't trust him with that task.
Ese tipo es un junior, no se le puede confiar esa tarea.