Regret definition : To feel sorry, disappointed, distressed, or remorseful about. REGRET definition : 1. to feel sorry about a situation, especially something that you wish you had not done: 2. used…. Learn more. Learn the meaning , pronunciation and grammar of the word regret , a noun that expresses a sad feeling about something that has happened or something that you have done or not done. See examples, synonyms and related phrases for regret . Regret definition : to feel sorrow or remorse for (an act, fault, disappointment, etc.).. See examples of REGRET used in a sentence.
