Difference Wiki

Redo vs. Undo: What's the Difference?

Edited by Janet White || By Harlon Moss || Published on January 11, 2024
Redo means re-performing an action. Undo means reversing an action.

Key Differences

Redo refers to the act of repeating or performing an action again, typically one that has been previously completed. This could be in various contexts like editing a document or redoing a task. Undo, in contrast, is the reversal or annulment of a previously completed action. It's often used in software to reverse the most recent changes.
In digital applications, redo is a feature that re-applies an action that was previously undone, allowing users to move forward in their work after reconsidering. Undo, on the other hand, is a common feature that allows users to revert their last action or a series of actions, essentially taking them back to a previous state.
When considering user experience, redo offers a way to reapply changes that might have been prematurely dismissed or altered, ensuring flexibility in decision-making. Contrastingly, Undo provides a safety net, allowing users to easily correct mistakes or reconsider their actions without permanent consequences.
Redo often represents progress or a second attempt, offering a chance to improve upon a previous effort. Undo symbolizes a step back, a chance to pause and reflect, or correct an error, essentially erasing the immediate past action.
In creative processes, redo allows for refinement and evolution of ideas, a forward-moving action that builds upon previous attempts. Undo, however, allows for a reassessment and alteration, providing a way to experiment without fear of making irreversible changes.

Comparison Chart


Implements an action again
Reverses a previously done action


Used when wanting to repeat or refine
Used when wanting to reverse or correct


Forward-moving in process
Backward-moving, reverting changes


Suggests improvement or repetition
Suggests correction or reconsideration

Frequency of Use

Less frequent, follows an undo
More frequent, as initial step of correction

Redo and Undo Definitions


To perform an action again.
After reviewing the report, she decided to redo the analysis.


To open or loosen something that was tied or fastened.
She undid the ribbon to open the gift.


To remake something differently.
The artist chose to redo the painting to change its mood.


To reverse or nullify an action.
She hit undo to revert the last change in the document.


To execute a previously undone action.
After undoing the deletion, he redid the formatting of the document.


To cause the downfall or ruin.
A single mistake could undo years of hard work.


To revise or improve upon something.
She redid her essay to enhance its clarity.


To cancel or annul a previous decision.
He decided to undo his earlier agreement.


To repeat a process or activity.
He had to redo the experiment to confirm the results.


To ruin or spoil something.
The sudden rain undid all our outdoor party arrangements.


To do over again.


To reverse or erase; annul
Impossible to undo the suffering caused by the war.


To redecorate
Redo the walls in red.


To untie, disassemble, or loosen
Undo a shoelace.


An act or instance of doing something again.


To do again.


A repeated action; a doing again, refurbishment, etc.


Make new;
She is remaking her image


Do over, as of (part of) a house;
We are remodeling these rooms


Is redo always available after an undo?

Not always, it depends on the context and application.

Does redo imply improvement?

Often, it implies an attempt to improve or refine.

What does redo mean in computer terms?

It means to reapply the last action that was undone.

Can undo be used in legal contexts?

Yes, to refer to reversing decisions or annulments.

Can undo be used to refer to physical actions?

Yes, like untying a knot or reversing a physical change.

How many steps can be undone typically in software?

It varies but commonly a few recent steps.

Is redo used in everyday language?

Yes, in contexts like redoing work or an activity.

Can redo and undo be used in gaming?

Yes, often to reverse or reapply moves.

Can redo be used in a non-digital context?

Yes, like redoing a task or assignment.

Are there limits to redo in digital tools?

Yes, often limited by the software's capacity.

Is undo always reversible?

In many cases, yes, but not always in physical or real-life situations.

Do undo and redo apply in artistic contexts?

Yes, often in digital art or design work.

Can undo apply to emotional states?

Metaphorically, yes, like undoing stress or tension.

Does undo have an opposite?

Redo is often considered its opposite.

Does undo have historical usage?

Yes, in various contexts over time, often with different connotations.

Is undo a modern term?

It's gained more usage with digital technology.

Can redo be related to time management?

Yes, in terms of redoing schedules or plans.

Is undo commonly used in software editing?

Yes, it's a fundamental feature in most editing software.

Can redo be a strategy in problem-solving?

Yes, as in redoing a method to achieve different results.

Can redo be linked to learning processes?

Yes, as in redoing exercises or practices for better understanding.
About Author
Written by
Harlon Moss
Harlon is a seasoned quality moderator and accomplished content writer for Difference Wiki. An alumnus of the prestigious University of California, he earned his degree in Computer Science. Leveraging his academic background, Harlon brings a meticulous and informed perspective to his work, ensuring content accuracy and excellence.
Edited by
Janet White
Janet White has been an esteemed writer and blogger for Difference Wiki. Holding a Master's degree in Science and Medical Journalism from the prestigious Boston University, she has consistently demonstrated her expertise and passion for her field. When she's not immersed in her work, Janet relishes her time exercising, delving into a good book, and cherishing moments with friends and family.

Trending Comparisons

Popular Comparisons

New Comparisons