Verb
untick (third-person singular simple present unticks, present participle unticking, simple past and past participle unticked)
(transitive) (UK) To uncheck; to remove a tick mark from.
Did you untick unknown sources in settings? Source: Internet
During setup, untick "Use system settings protection (TeaTimer)" on the "Select Additional Taaks" page and you should be fine. Source: Internet
Hey, you should untick the unwanted programs that come with the installer. Source: Internet