the mind > emotion > aspects of emotion > sentimentality > [adverb] > shallowly
lackadaisically1829
1829 E. Bulwer-LyttonDevereux I. ii. iv. 189 ‘I think I am,’ reiterated the dead man, very lack-a-daisically.
1851 D. JerroldSt. Giles & St. James (new ed.) xii, in Writings I. 121 He stands..with one leg drawn up, and his ten fingers interlaced lackadaisically.