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悔しい， 口惜しい， くやしい
1. frustrated (over a failure, humiliation or injustice), annoyed, chagrined, (bitterly) disappointed, bitter, vexed, frustrating, annoying, regrettable
沮丧（因失败、羞辱或不公），恼火，懊恼，（痛心地）失望，苦涩，烦闷，令人沮丧，恼人，令人遗憾
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後悔， こうかい
1. regret, repentance, remorse
后悔，悔改，懊悔