captive
cap-tive
adjective
Held in confinement, unable to escape or move freely.
"The zoo keeps several captive animals."
noun
A person or animal held prisoner or confined.
"The soldiers freed the captives."
Thesaurus
Synonyms: intent, enwrapped, absorbed, rapt, attentive, wrapped, engrossed, confined, imprisoned, jailed, unfree, prisoner