disgruntled UK /dɪsˈɡɹʌntl̩d/US /dɪsˈɡɹʌnt(ə)ld/ adjective1 •In a dissatisfied, frustrated, or upset mood; in a bad temper or ill humour.disgruntled employees preparing to strike over the lack of progress in talks with their employer on pay and conditions formsmore disgruntled · most disgruntled
