futilitarian UK /fjuːˌtɪlɪˈtɛəɹi.ən/US /fjuˌtɪləˈtɛɹi.ən/noun 2adjective 1forms 3 noun2 •A person believing that all human activity is futile. •A person devoted to profitless pursuits. adjective1 •Having the opinion that all human activity is futile. formsfutilitarians · more futilitarian · most futilitarian