eat at someone  じわじわと人を苦しめる、困らせる、悩ませる。0;47 food insecurity eats at her. 彼女は食料不安にさいなまれている。 
 
Americans reveal how they’re falling behind on groceries, student loans and more
 
 
0;19 and clearly this is still eating at the president. ティラーソン国務長官に「どうしようもない馬鹿」と言われたことで、ドランプの小さな心は傷ついている
 
Donald Trump Wants You to Know He's Smart
 
 
4:25 and that's the thing that I think continued to eat at me ever since it happened.  あの事件が起こって以来、私の心はづっとつらい思いをしている。 
 
Woman awaits apology for hotel experience
 
 
3:01 it was starting to eat at me.  彼女の空約束が、私の生活が困窮し始めた。 
 
Former friend to fake heiress talks falling under her spell
参考リンク
   https://bridge-english.blogspot.com/2024/11/eat-away-at-something.html    eat away at something 徐々に破壊する
