tactfulEnglishOxford New American Dictionarytactful /ˈtak(t)fəl, ˈtæk(t)fəl / ▸ adjective having or showing tact: they need a tactful word of advice they were too tactful to say anything. – DERIVATIVES tactfulness /ˈtak(t)fəlnəs, ˈtæk(t)fəlnəs / noun