Japanese phrase
失礼いたしました。 shitsu rei i ta shi ma shi ta
Meaning
I sincerely apologize.
When to use it
A formal apology for causing trouble or acting improperly. It is polite and commonly used in business or other respectful situations.
Example dialogue
先ほどは大変失礼いたしました。 saki ho do wa tai hen shitsu rei i ta shi ma shi ta
I sincerely apologize for earlier.
いえ、お気になさらず。 i e o ki ni na sa ra zu
No worries.