frenetic /fɹəˈnɛt.ɪk/adjective 3noun 1forms 3 adjective3 •Frenzied and frantic, harried; having extreme enthusiasm or energy.After a week of working at a frenetic pace, she was ready for Saturday. •(no longer used) Mentally deranged, insane. •(no longer used) Characterised by manifestations of delirium or madness. noun1 •One who is frenetic. formsfrenetics · more frenetic · most frenetic