IPA: //dɪkˈtæt//
KK: /dɪkˈtæt/
A strict rule or order that is imposed by someone in authority, often without any agreement from those affected.
The new policy was seen as a diktat from the management that employees had to follow without question.
Diktat originates from the German word 'diktat', meaning a decree or order, derived from 'diktieren' (to dictate), which comes from the Latin 'dictare' (to say or declare).
Think of a 'decree' or 'order' being 'dictated' — that's why 'diktat' refers to an authoritative order.