disarming
From Longman Dictionary of Contemporary Englishdisarmingdis‧arm‧ing /dɪsˈɑːmɪŋ $ -ˈɑːr-/ adjective TRUSTmaking you feel less angry or disapproving towards someone, and more friendly a disarming sense of humor —disarmingly adverbExamples from the Corpusdisarming• It wouldn't have worked without his disarming honesty.• But Rank was a disarming opponent.• a disarming smile