un·friend 
(ŭn-frĕnd)
(ŭn-frĕnd)tr.v. un·friend·ed, un·friend·ing, un·friends
To remove (someone) as a friend on a social networking website.
- unimpeachable
- unimpeachably
- unimportance
- unimportant
- unimproved
- uninformative
- uninformatively
- uninformed
- uninhabitability
- uninhabitable
- uninhabited
- uninhibited
- uninhibitedly
- uninhibitedness
- uninitiated
- uninspired
- uninstall
- uninsurability
- uninsurable
- uninsured
- unintelligence
- unintelligent
- unintelligently
- unintelligibility
- unintelligible