If "captured" means "taken prisoner":
* Released: This is the most common opposite, meaning to set free.
* Escaped: This means to break free from captivity.
If "captured" means "seized or taken control of":
* Released: This can also be used in this context, meaning to give up control.
* Lost: This means to have something taken away or to no longer have control.
* Surrendered: This means to give up control willingly.
If "captured" means "recorded or documented":
* Deleted: This means to remove the recording or documentation.
* Destroyed: This means to permanently remove the recording or documentation.
Example:
* Captured: The soldiers captured the enemy leader.
* Released: The enemy leader was released after negotiations.
* Escaped: The enemy leader escaped from captivity.
It's important to consider the specific context to choose the most appropriate opposite verb.