WordNet sense 1 ((especially of incident sound or light) not turned back by physical reflection):

unreflected

WordNet sense 2 (giving or marked by complete attention to):

captive, engrossed, intent, enwrapped, wrapped

WordNet sense 3 ((often followed by `to') giving care or attention):

attentive

WordNet sense 4 (capable of being absorbed or taken in through the pores of a surface):

absorbable