bewail
bemoan
lament
deplore
compunction
remorse
self-reproach
too bad
regrettable
regret
regrettingly
guilt
apology
fear
rue the day
shame
wear sackcloth and ashes
live to regret
regretful
ruesome
regretlessness
whip the cat
bitter
aiyo
apologize
resentable
regrettableness
regretter
Ichabod
ochanee
F
penitence
regretfully
penance
pang of conscience
repentance
pity
stew
grudge
could have, would have, should have
disbecame
retroactive rape
regretting
sackcloth and ashes
desire
regretfulness
shamed
forgave and forgot
discredited
oblivion
dishonored
sayang
eat one's words
disgraced
obliviousness
prick
seem like a good idea at the time
revulsive
attrite
repine
repent
forgot about
miss
sorriness
badly
misgrew
lamentably
stupor
forgave
daze
remorselessness
put behind one
heartbreak
alack and alas
shock
ungrew
contrite
regrettably
simp
overgave
tensegral
revulsed
self-hatred
lamenting
self-disgust
afraid
miscame
amnesty
offthrew
repugnance
foredrew
elegiac
ungave