行ってきます。
Ittekimasu.
I’m off. (leaving home)
- Word for word
- “I’ll go and come back.”
- Politeness: Neutral
- Fixed expression that suits almost everyone, with no politeness marker to adjust.
- When you would say it
- Leaving home or the office for the day.
- Worth knowing
- The reply is いってらっしゃい. Both phrases promise that you will return.