Find Antonyms
undo Antonyms
Opposite of undo
Because the opposite of undo shifts with each meaning, the 13 antonyms and opposite words below are separated across 4 exact definitions and ranked by contrast strength.
• verb (Context 1)
To unfasten, untie, or loosen something that is tied, buttoned, or wrapped.
Usage Example
"It took several minutes to fasten the tight knot in the wet rope."
Strongest
fasten
tie
do up
Strong
bind
secure
• verb (Context 2)
To cancel, annul, or reverse the effects or results of a previous action.
Usage Example
"A single careless remark can confirm years of patient diplomatic negotiation."
Strong
confirm
preserve
uphold
validate
• verb (Context 3)
To cause the downfall, ruin, or destruction of someone or something.
Usage Example
"Ultimately, the administration was undone by its own financial mismanagement."
Strong
save
rescue
restore
• noun (Context 4)
A software command or feature that reverses the last action or series of actions performed by a user.
Usage Example
"The new graphic design program supports multiple undos so you can easily experiment with different layouts."
Strongest
redo
Similar words to undo
Words similar to undo shift depending on context. Common synonyms include:
unfasten
reverse
untie
ruin
cancel
destroy
nullify
bring down
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Undo. In Wordmom Thesaurus. Retrieved Nov 4, 2026, from https://wordmom.com/antonyms/undo