What does 悔しい mean?
悔しい is a Japanese adjective meaning “regrettable, mortifying, vexing” in English. It is written as 悔しい in kanji, くやしい in hiragana, and kuyashii in romaji. This word is part of JLPT N5 vocabulary.
Example sentence
監督はチームをトーナメント優勝に今一歩という所までもっていったのに悔しいことだった。
It was annoying, as the manager took his team to a near-miss in the tournament.