もうお腹いっぱいです。
Mō onakaippai desu.
I’m full.
- Word for word
- “The stomach is already full.”
- Politeness: Polite
- です/ます style. The safe default with strangers, shop staff and colleagues.
- When you would say it
- Politely declining more food.
- Worth knowing
- Often said with a smile and a small hand gesture. Hosts will offer more, so it can take two tries.