Definition: To deactivate your Twitter account, click the gear icon in the upper-right corner of the Twitter web interface, choose Settings, then Account or http://twitter.com/settings/account. Scroll to the very bottom and click on Deactivate my account. They’ll ask if this is really goodbye and was it, perhaps, something they said? They’ll also let you know that the account stays dormant in their system for 30 days after you deactivate it, just in case you change your mind. If you do, just log in and it’s all yours again.
Also Known As: closing your Twitter account, deactivating twitter