ταρταρόω G5020
tartaróō · tar-tar-o'-o · Verb
from (the deepest abyss of Hades); to incarcerate in eternal torment:--cast down to hell.
1 Occurrence in the King James Bible
2 Peter 2:4For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment;