Answer: UNDID
UNDID is a crossword puzzle answer that we have spotted 35 times.
    - Ruined
 
    - Reversed
 
    - Opened
 
    - Disconnected
 
    - Voided
 
    - Reversed the effects of
 
    - Nullified
 
    - Fixed a word-processing error
 
    - Erased, in a way
 
    - Opened, as a tie
 
    - Destroyed
 
    - Brought to naught
 
    - Canceled
 
    - Opened, as a blouse
 
    - Loosened, as a 57-Down
 
    - Opened, as a necktie
 
    - Disassembled
 
    - Took apart
 
    - Brought to ruin
 
    - Opened, as a fastener
 
    - Loosened
 
    - Erased
 
    - Disentangled
 
    - Detached
 
    - Removed ties
 
    - Annulled or erased
 
    - Dismantled
 
    - Loosened, as laces
 
    - Disengaged
 
    - Removed, as a knot
 
    - Pressed Ctrl+Z
 
    - Overturned
 
    - Loosened, as shoelaces
 
    - Corrected with Ctrl Z
 
    - Loosened, as a knot