See regretful in Webster's New World Roget's A-Z Thesaurus II
adjective
Expressing or inclined to express an apology:
apologetic, contrite, penitent, repentant, sorry. See regretFeeling or expressing regret for one's sins or misdeeds:
compunctious, contrite, penitent, penitential, remorseful, repentant, sorry. See regret
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