A feeling of heaviness or discomfort in the stomach, often from overeating or indigestion.
昨夜食べ過ぎて、今朝は胃もたれがひどい。
I ate too much last night and have terrible indigestion this morning.
脂っこいものを続けて食べると胃もたれしやすい。
If you keep eating greasy food, you're likely to get an upset stomach.
バス旅行で長時間座っていて胃もたれが起きた。
After sitting on the bus for a long time I got an upset stomach.
胃もたれがする時は、消化に良いものを食べると楽になることが多い。
When you have indigestion, eating easily digestible foods often helps.