undig

un- +‎ dig

undig (third-person singular simple present undigs, present participle undigging, simple past and past participle undug)

1. (transitive) To undo the process of digging; to fill up (a hole or grave) or bury again (something unearthed).
   • Mary Russell Mitford

     Tom Cordery dead! the words seem almost a contradiction. One is tempted to send for the sexton and the undertaker, to undig the grave, to force open the coffin-lid — there must he some mistake.

   • 1859, Charles Dickens, A Tale of Two Cities

     […] let that father go into the line of the reg'lar diggin', and make amends for what he would have undug […]

• gnudi, gundi