The difference between Button up and Undo
When used as verbs, button up means to fasten with a button or buttons, whereas undo means to reverse the effects of an action.
Undo is also noun with the meaning: an operation that reverses a previous action.
check bellow for the other definitions of Button up and Undo
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Button up as a verb (transitive):
To fasten with a button or buttons.
Examples:
"Button up your shirt cuff. It has come undone"
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Button up as a verb (intransitive):
To fasten all the buttons on a coat, or similar item of clothing, to keep warm.
Examples:
"Button up well. It's freezing outside today."
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Undo as a verb:
To reverse the effects of an action.
Examples:
"Fortunately, we can undo most of the damage to the system by the war."
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Undo as a verb:
To unfasten.
Examples:
"Could you undo my buckle for me?"
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Undo as a verb (figuratively):
To impoverish or ruin, as in reputation; to cause the downfall of.
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Undo as a noun (computing):
An operation that reverses a previous action.
Examples:
"How many undos does this program support?"
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Undo as an adjective: