noun, na-adjective
deep regret; bitter disappointment
A yojijukugo expressing profound regret or chagrin, often used in formal or dramatic contexts. Can function as a noun or adjectival noun.
優勝を逃し、選手たちは残念無念の表情を浮かべた。
Having missed the championship, the players wore expressions of deep regret.
Upon hearing the news, I was so bitterly disappointed that I was at a loss for words.