the mind > attention and judgement > attention > earnest attention, concentration > [adverb] > with absorption (5)
figurative. Deeply, profoundly.
With full attention; with great interest; to the point of being completely engrossed.
in an engrossed manner; with absorbed attention.
In a rapt manner; (in early use) rapturously, entrancedly; (now usually) intently, concentratedly, absorbedly. Chiefly with verbs of observation.