smilingly
From Longman Dictionary of Contemporary Englishsmilinglysmil‧ing‧ly /ˈsmaɪlɪŋli/ adverb done or said with a smile ‘Of course, ’ she replied smilingly.Examples from the Corpussmilingly• He sits on the edge of the bed where Kate lies fenced in by bolsters and proffers it smilingly.• But inside the old building she had found the staff reassuringly up to date, and smilingly efficient.• And smilingly he remained kneeling, as a mark of genuine respect for Howard's beliefs.• Philippa smilingly obliged and Athelstan groaned.• He smilingly proffered me a cup of watered wine in one of the goblets I had hidden away the previous evening.