noun, noun or participle which takes 'suru', intransitive verb
sitting heavy in one's stomach; remaining undigested
Describes the feeling of food staying in the stomach without digesting properly, often causing discomfort.
脂っこいものを食べると、すぐ食もたれする。
When I eat greasy food, it sits heavy in my stomach right away.
昨夜の焼き肉がまだ食もたれしている。
Last night's grilled meat is still sitting heavy in my stomach.