くいすぎる

くいすぎる【食い過ぎる】

eat too much; overeat (oneself); overfeed oneself; eat to excess; stuff oneself (with food). [＝たべすぎる]

●食い過ぎて胃を悪くする upset one's stomach by overeating

・甘い物を食い過ぎる stuff oneself with [eat too many] sweets.