A feeling of regret or disappointment when something is unfortunate or a hope is not fulfilled (used as 残念だ, 残念ながら, etc.).
試験に落ちて残念だったが、次はもっと頑張るつもりだ。
I was disappointed to fail the exam, but I intend to try harder next time.
残念ながらその日は都合がつきません。
Unfortunately, I won't be available that day.
残念な結果になったが、経験は無駄ではない。
It was a disappointing result, but the experience wasn't wasted.
残念ながら募集は締め切られました。
Unfortunately, the recruitment has been closed.