Definitions by aBronyPlays

ETA ONIS 

ETA ONIS (or etaonis) is an acronym. It's the order of letters in the English language from most to least used in a word. Useful when cracking polyalphabetic cyphers.

ETA ONIS is especially helpful when deciphering polyalphabetic codes! Even Macallan used them!

ETA ONIS by aBronyPlays February 5, 2021