noun
Refers to eating too much, often with a nuance of excess or discomfort.
食いすぎでお腹が痛い。
My stomach hurts from overeating.
食いすぎに注意してください。
Please be careful not to overeat.
More common and neutral term for overeating. 食いすぎ is slightly more casual or blunt.
Compound of 食い (stem of 食う, 'to eat') + すぎ (noun form of 過ぎる, 'to exceed').