deactivate

US /ˌdiˈæk.tɪ.veɪt/
UK /ˌdiˈæk.tɪ.veɪt/
"deactivate" picture
1.

make (something) inactive; cause to stop functioning

:
You need to deactivate your old account before creating a new one.
The bomb squad worked to deactivate the explosive device.