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undo

un·do

undo

 
pronunciation:
uhn du
features:
Homophone Note, Word Parts
part of speech: verb
inflections: undoes, undoing, undid, undone
definition 1: to release from or remove wrapping or fastening from.
The captain undid the knot that tied the boat to the dock.
antonyms:
fasten
similar words:
loose, loosen, release
definition 2: to make useless; reverse.
He undid the good that others had done.
similar words:
neutralize
definition 3: to ruin or destroy.
If the hurricane hits land, it will undo all of the farmers' hard work.
similar words:
ruin
Homophone Note
Are you looking for the word undue (too much)? Undo and undue sound alike but have different meanings.
Word Parts
The word undo contains the following part:
un-2 Old English prefix that means reverse (an action)
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The prefix un-2 attaches to verbs.
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synonyms:
de-, dis-