Synonymer till regretssubstantiv(sadness associated with some wrong done or some disappointment) sorrow; regret; rue; ruefulness; regrets(a polite refusal of an invitation) declination; regretsverb(feel remorse for; feel sorry for; be contrite about) repent; regret; rue; regrets(feel sad about the loss or absence of) regret; regrets(decline formally or politely) regret; regrets(express with regret) regret; regrets