Dictionary / Vocabulary / 折角
せっかく
with trouble; at great pains; rare; valuable
JLPT N2 common word Also written 切角
折角来てくれたのに留守をしていてごめんね。
I'm sorry that I wasn't home when you so kindly dropped by.
折角なお天気な日なので、今日は垣を塗り替えた方がいいと思います。
You should take advantage of the good weather to paint the fence.
「週末にさ、映画、観に行かない？」「折角なんだけど、ダメなの。誘ってくれてありがとう」
"Would you like to go to a movie this weekend?" "I'm sorry I can't, but thanks for asking."