"mutually understood" — Diccionario de colocaciones de inglés

mutually understood colocación
Automatic translation (No garantizamos su exactitud.): nawzajem zrozumieć
  1. understand verbo + mutually adverbio
    Muy relajada/ suelta colocación

    That's not too tough an assignment-provided the author and reader are talking about characters against a mutually understood cultural background.