noun
eating well; good appetite
Refers to eating with enjoyment and a healthy appetite. Often used in contexts of health, recovery, or describing a hearty meal.
病気が治って、快食できるようになった。
I recovered from my illness and can now eat well again.
彼はいつも快食で、何でもおいしそうに食べる。
He always has a good appetite and eats everything with relish.