1. An order or decree imposed without popular consent.
2. A harsh settlement imposed upon a defeated party.
From German Diktat (command, order, dictation), from Latin dictatum (something dictated), from dictare (to dictate), frequentative of dicere (to say). Ultimately from the Indo-European root deik- (to show, to pronounce solemnly), which is also the source of words such as judge, verdict, vendetta, revenge, indicate, dictate, paradigm, interdict, and fatidic. Earliest documented use: 1922, in reference to the Treaty of Versailles of 1919, by Germany.
“Public participation in politics [in China] may not yet be approaching the raucousness in India, but it is equally incorrect to view the Chinese as obedient zombies silently following the State’s every diktat.”
Cultural Evolution; Hindustan Times (New Delhi, India); Dec 19, 2010.