Jōyō kanji, Taught in junior high
JLPT level: N1
1460 of 2500 most used kanji in newspapers
Stroke count: 9
Meaning: repent, regret
Kunyomi: く.いる く.やむ くや.しい
Onyomi: カイ
Composition: 忄 毎
Radical: 心
Meaning: heart
悔恨 （カイコン） regret, remorse, repentance, contrition
悔悟 （カイゴ） remorse, repentance
痛悔 （ツウカイ） contrition, extreme regret, contrition (in Catholicism)
悔いる （くいる） to regret
悔やむ （くやむ） to mourn, to lament, to be sorry, to regret, to repent
悔しい （くやしい） frustrated (over a failure, humiliation or injustice), annoyed, chagrined, (bitterly) disappointed, bitter, vexed, frustrating, annoying, regrettable