"strict obligation" — Kollokationen-Wörterbuch Englisch

strict obligation Kollokation
Automatische Übersetzung (wir garantieren seine Korrektheit nicht): surowy obowiązek
  1. strict Adjektiv + obligation Substantiv
    Schwache Kollokation

    There have even been some rumblings along follicular fault lines, with a few priests suggesting that their signature beards become a style option rather than a strict obligation.