fear
live to regret
lament
bewail
deplore
bemoan
shame
too bad
regrettable
sayang
guilt
ruesome
regretlessness
regret
self-reproach
regrettingly
compunction
remorse
rue the day
desire
whip the cat
regretfully
repine
apologize
wear sackcloth and ashes
regrettableness
pity
regretfulness
apology
regretting
repent
eat one's words
Ichabod
I'm afraid so
regretter
regretful
F
ochanee
no such luck
not want to do that
lamentably
seem like a good idea at the time
whoops-a-daisy
whoopsie-daisy
could have, would have, should have
penitence
look back
penance
repentance
put behind one