excuse, regrets, plea, justification; see acknowledgment 1, 2, explanation 2, regret 1.
"apology." YourDictionary, n.d. Web. 17 August 2018. <http://thesaurus.yourdictionary.com/apology>.
apology. (n.d.). Retrieved August 17th, 2018, from http://thesaurus.yourdictionary.com/apology
A statement of acknowledgment expressing regret or asking pardon:
A statement that justifies or defends something, such as a past action or policy: