repent, regret
悔 centers on the painful feeling of wishing you had done something differently: repenting for a wrong action or regretting a missed opportunity.
悔 combines the heart radical 忄 with 每, which likely contributes the sound. The heart radical points to an emotional state, fitting the idea of regret.
The heart radical 忄 beside 每 suggests a heart burdened by every past mistake. Picture your heart aching every time you think of what you should have done differently.
For カイ, imagine a regretful sigh that sounds like 'kai…' escaping your lips as you remember a mistake. The sigh 'kai' cues カイ, and the heavy heart shows the regret.
regret; repentance; remorse
frustrated (over a failure, humiliation or injustice); annoyed; chagrined; (bitterly) disappointed; bitter; vexed; frustrating; annoying; regrettable
to mourn; to lament
regret; repentance
repentance; confession; penitence
condolences
repentance
condolence; condolences
regret; remorse; repentance; contrition
tears of regret; bitter tears; vexation; chagrin
to regret
remorse; repentance
to repent; to be penitent
crying from vexation; tears of regret
my condolences; my deepest sympathy
it is better to try and fail than never to try at all
national confession of Japanese war guilt (1945)
the arrogant dragon will have cause to repent; he who reaches the top is bound to fail if he is not prudent
it is no use crying over spilt milk
no regrets; without regrets