Where does “eat away at” come from?

eat away at (English) comes from English AT, from Middle English at, from Old English æt, from Proto-Turkic āt, from Proto-Germanic ētą, from Proto-Germanic etaną, from Proto-Indo-European h₁édti, from Proto-Indo-European h₁ed- — to eat.

eat away at (English): To erode

Definitions

  1. To erode

Ancestry of “eat away at”, step by step

eat away at traces back through two separate lines of ancestry.

via English AT

StepLanguageWordMeaning
1EnglishATInitialism of assistive technology; Initialism of...
2Middle Englishatat; to
3Old Englishæteating; at a certain place; at a certain time
4Proto-Turkicātname
5Proto-Germanicētąthe act of eating; food
6Proto-Germanicetanąto eat
7Proto-Indo-Europeanh₁édtito eat
8Proto-Indo-Europeanh₁ed-to eat

via English eat away

StepLanguageWordMeaning
1Englisheat awayTo physically corrode or erode (something) gradually
2EnglisheatTo ingest
3English-ableAn adjectival suffix; forms adjectives meaning
4Middle English-ableable
5Old French-ableworthy of, deserving of; -ing, creating an...
6Latin-ābilissuffixed to noun to form adjectives meaning "able to have or bring, prone to have or bring, having the power to have or bring": -able
Every word from Proto-Indo-European h₁ed-