General:
* Kidnap
* Carry off
* Seize
* Snatch
* Take away
* Remove
* Steal (when referring to a person)
* Lure (when referring to someone who is tricked)
More formal:
* Detain (if the person is held against their will)
* Imprison (if the person is taken to a place of confinement)
* Apprehend (if the person is taken into custody by law enforcement)
Figurative:
* Divert (when referring to attention or resources)
* Misappropriate (when referring to something that is stolen or used for an improper purpose)
The best synonym for "abduct" will depend on the specific situation and the intended meaning.