Regret has been defined by psychologists in the late 1990s as a "negative emotion predicated on an upward, self-focused, counterfactual inference ". [1] Another definition is "an aversive emotional state … 6 days ago · The meaning of REGRET is to mourn the loss or death of. How to use regret in a sentence. Synonym Discussion of Regret. a feeling of sadness about something sad or wrong or about a mistake that you have made, and a…. Apr 20, 2026 · Regret can be a painful emotion, but it can also help motivate you to make better choices. Learn more about steps you can take to cope with regret. regret synonyms, regret pronunciation, regret translation, English dictionary definition of regret. re·gret·ted , re·gret·ting , re·grets v. See examples of regret used in a sentence.