As a native speaker of a germanic language, I want "overmorrow" and "hight". Both are archaic words and might actually be in the dictionary if it's a good enough dictionary.

"Overmorrow" means "the day after tomorrow". Much less of a mouthful.

"Hight" means "to be named". There are a bunch of sentences that become awkward in English because there's no transitive verb to form sentences like "I hight Squeeks". Instead you are forced to use clumsy constructions like "My name is Squeeks"