残念だが

unfortunately, but

→ 残念だ
phrase Uncommon #8,096
unfortunately, but A somewhat formal or literary way to introduce disappointing news or a refusal. が means “but” and softens the statement that follows.
JA: 残念だが、今日は参加できない。
EN: Unfortunately, I can't participate today.

残念だが

Unfortunately, though.

— ウエスタン (1968)

残念だが時代遅れだ

Unfortunately, it’s outdated.

— レッドクリフ Part I (2008)

残念だが今日は時間がない

Unfortunately, I don't have time today.

残念だが君の計画は全く役に立たない

Unfortunately, your plan is completely useless.

残念だが遠慮する

Unfortunately, I’ll have to decline.

— レベッカ (1940)

残念だがそのことについてに賛成できない

Unfortunately, I can't agree with you on that.

残念だが昼食なんで

Sorry, but it’s lunchtime.

— レベッカ (1940)

つまり姉は残念だが

In other words, my sister... regrettably.

— サイコ (1960)

残念だがそんな暇はない

Unfortunately, I don't have time for that right now.

残念だが口座凍結された

Unfortunately, my bank account has been frozen.

— マルホランド・ドライブ (2001)

残念だが無理だ

Unfortunately, that's impossible.

残念だがお前スーザン結婚できない

Unfortunately, you and Susan can't get married.

残念だが彼女は結婚してる

Unfortunately, she's married.

— マレーナ (2000)

残念だが野球が一番だ

Sadly, baseball is the best.

— ア・フュー・グッドメン (1992)

残念だがプラスチックコップしかない

Unfortunately, we only have plastic cups.

— ザ・マン・フロム・アース (2007)