morrow

The word 'morrow' has a direct lineage from the Old English 'morgen', meaning "morning." Through Middle English, it evolved from 'morgen' to 'morwen' and then contracted to 'morwe', eventually settling into its modern form. Its core semantic shift was a broadening from the specific period of "morning" to the more general concept of "the following day." This evolution reflects a common linguistic pattern where a term for a part of the day comes to represent the entire subsequent day-cycle, a logic preserved in the now-archaic or poetic usage of 'morrow' to mean tomorrow.

The word is a simplex form derived from the Middle English 'morwe', a contraction of 'morwen', which itself comes from Old English 'morgen' (morning, the following day). It is of Germanic origin.