An Etymological Dictionary of the German Language/Annotated/anberaumen

by Friedrich Kluge

anberaumen, verb, ‘to fix or appoint (a time),’ with a dialectic transmutation of â into au (Old Bavarian), or the word was based by popular etymology on Raum, from Middle High German râmen (rœmen), ‘to make proposals, aim, strive’ (berâmen, ‘to fix’), Old High German râmên, Old Saxon râmôn, ‘to aim, strive,’ Dutch beramen, ‘to fix’; allied to Middle High German râm ‘goal’ (root rê, as in Rede?). Further Old French aramir, ‘to define legally’?.