As compared to “day after tomorrow,” which has 16 letters (including spaces) and 6 syllables, “overmorrow” only has 10 letters/characters and 4 syllables, making it more logical to use “overmorrow” in writing and spelling. Even though the word “overmorrow” mysteriously vanished sometime in the midst of Middle English, it is still a valid word that is gradually being transformed into Modern English. In case you were wondering, the word “overmorrow” is in the Scrabble dictionary.

Also Read – Vocabulary differences between British and American English