WordNet sense 1 (a person who is confined; especially a prisoner of war):

prisoner

WordNet sense 2 (in captivity):

confined, imprisoned, jailed

WordNet sense 3 (hampered and not free; not able to act at will):

unfree

WordNet sense 4 (giving or marked by complete attention to):

absorbed, engrossed, intent, enwrapped, wrapped

WordNet sense 5 ((often followed by `to') giving care or attention):

attentive