An Etymological Dictionary of the German Language/groß
groß, adj., ‘great, large, huge, grand,’ from the equiv. MidHG. and OHG. grôȥ; a specifically West Teut. adj. (in Goth. mikils, MidHG. michel, Gr. μεγάλη); comp. OSax. grôt, Du. groot, E. great, AS. greát. The assumed Goth. *grauta- (pre-Teut. ghraudo-) has no correspondences in the non-Teut. languages. On account of the Teut. au especially, Lat. grandis cannot be primit. allied; it is rather connected with Lat. rûdus, raudus, n., ‘lump of bronze, stones broken into small pieces,’ and rudis, ‘raw’ (Aryan root ghrū̆d).