contrite
penitential
penitentiary
remorseful
rueful
ruthful
abject
apologetic
ascetic
ashamed
atoning
cleansing
compensational
compensatory
compunctious
embarrassed
expiatory
humble
humbled
lustral
lustrational
lustrative
melted
penitent
piacular
propitiatory
purgative
purgatorial
purifying
reclamatory
recompensing
redeeming
redemptive
redressing
regretful
reparative
reparatory
repenting
restitutional
restitutive
restitutory
righting
satisfactional
sheepish
softened
sorry
squaring
touched
abashed
affectionate
broken-hearted
crestfallen
downcast
errant
homesick
reverent
solicitous
sorrowful
submissive
thankful
unhappy
unrepentant