勿論最初の約束優先ということで謝ったわ。の英語

Of course I apologised, saying that the first appointment had priority.

First of all I'd like to apologize to you.

I seem to have misunderstood the arrangement.

In any case, it's wrong to break a promise.

First of all, I have to apologize to you.

First of all, I have to apologize to all of you.

My promise obliges me to do so

My promise lays me under the necessity of doing so

“A bargain is a bargain.”【イディオム・格言的】

You just have to promise me one thing.

I said I would definitely keep my promise.

I regret not keeping that promise.

He barely fulfilled his promise.

Forgive me for breaking my promise.

I completely forgot that promise.

That promise completely slipped my mind.

“A bargain is a bargain.”【イディオム・格言的】

I'm sorry for breaking my promise.

It wasn't very discreet of you to forget the appointment.

The promise I made to you last week still holds true.

Don't misunderstand me; we are not making any promises.

I regret not having kept my promise.

I had to postpone my appointment.

I was late to the time I promised.

Be better than one's word.

I think it's important to keep a promise.

I think keeping promises is important.

I'm sorry I couldn't keep that promise.

We must not break our promise.

The other lot is already sold.