godan verb (-su), transitive verb
leave food uneaten; not finish a dish
Used when someone does not eat all of the food served, leaving some behind.
好き嫌いが多くて、いつも給食を食べ残してしまう。
Because I'm a picky eater, I always end up leaving some of my school lunch uneaten.
料理が多すぎて、
There was too much food, so I left more than half of it uneaten.