With lightness
delicately, airily, buoyantly, daintily, readily, gently, subtly, exquisitely, ethereally, mildly, softly, tenderly, carefully, leniently, tenuously, unsubstantially, effortlessly, nimbly, agilely, smoothly, blandly, sweetly, comfortably, restfully, peacefully, quietly, ripplingly, soaringly; see also easily 1, gracefully.
Antonyms heavily*, ponderously, roughly.