transitive verbun·de·let·ed, un·de·let·ing, un·de·letes
(third-person singular simple present undeletes, present participle undeleting, simple past and past participle undeleted)
un- +"Ž delete
undelete - Computer Definition
To restore the last delete operation that has taken place. There may be more than one level of undelete, allowing several or all previous deletions to be restored. Files in Windows and Mac can generally be undeleted because they are only moved to the recycle bin or trash can when they are deleted in an application or file manager. See file wipe.