overmorrow
Of or relating to the day after tomorrow.
archaic, rare
For thou néedeſt not by thy morrowe and ouermorrowe delayes to augment his diſcommoditie ⁊ [and] hinderance any longer, from whom thou haſt by thy ſubtile meanes and wicked violence, wreſted the goodes that he hath, conſidering yͭ [that] he to his loſſe hath lacked them long enough, ⁊ béen without them too too long God wott.
Where it comes from
The adverb is derived from over- (prefix meaning ‘above, higher’) + morrow, probably a calque of German übermorgen (adverb) (compare also Übermorgen (noun)), from Middle High German übermorgen, from Old High German ubar morgan, ubar morgana, from obar, ubar (“above”) + morgan, morgana (“morning”). The noun and adjective are derived from the adverb. Cognates * Danish overmorgen * Dutch overmorgen * Middle Low German övermorgen
Adapted from the Wiktionary entry overmorrow (CC BY-SA 4.0).