You dictated four decent sentences and one word came out wrong. A name, usually. Now you are holding a mouse, which rather defeats the point.

What you can do about it depends entirely on which tool you were dictating with, and the honest answer for the most common one is disappointing. Here it is properly.

Apple's keyboard dictation: you mostly cannot

The microphone key transcribes. It does not take editing instructions. Say "delete that" while dictating and you will get the words delete that typed into your document, which is worse than the original mistake.

Your options are the keyboard, or the next section. There is no third thing, and any guide telling you to say "scratch that" to Apple's keyboard dictation is describing software that does not exist.

Voice Control: yes, and it is good at this

System Settings → Accessibility → Voice Control. This is a different feature from the microphone key, and correction is where it earns its place. It understands editing as a command grammar rather than as words to type.

Roughly, you can select text by naming it, then replace it by speaking the replacement — say the phrase you want to change, then say what it should say instead. You can also delete by phrase, and move the insertion point around by voice.

The exact wording varies by macOS version, and Voice Control ships with its own command list — say show commands while it is running and it will show you what your machine actually accepts. That list is the authority, not this page or any other.

Two things to know before you commit. Voice Control is always listening while enabled, and it interprets everything you say as a possible command, which takes adjusting to. And it changes the behaviour of your whole Mac rather than the app you are typing into. For people who cannot use a keyboard at all that is exactly right. For someone who wanted to fix one word, it is a lot of machinery.

What good correction actually needs

Having watched people try to work this way, the difference between a correction feature that gets used and one that gets abandoned comes down to three things.

It has to be certain what it is changing. "Correct that" is meaningless unless the tool knows precisely which text it put on screen. A tool that guesses will eventually eat a sentence you wrote by hand, and after that happens once you will never trust it again.

It has to refuse rather than improvise. If the word you named appears twice, the right behaviour is to stop and say so. Picking one at random is how you end up with a document that is subtly wrong in a place you were not looking.

It has to work in your real app. A correction feature that works in a demo window and not in Mail is a demo.

What Mynato does

These are the commands as they ship. Say them while dictating, in whatever app your cursor is already in.

scratch that	Removes the last thing Mynato typed, entire. Say it twice to walk further back.
delete last word	Removes the final word. Repeatable.
delete last three words	Any number up to ten.
delete last sentence	Removes the final sentence.
correct Arion to Aryan	Finds the wrong word in what it typed and replaces it.
undo that	Sends the app its own undo, which works everywhere.
cap that	Capitalises the preceding word.
new line, new paragraph	What they say.
select that	Selects what it typed, so you can act on it with your app's own commands.
stop listening	Ends a continuous session.

Two design decisions are worth stating because they are the ones that make it safe to use on real work.

Mynato only ever touches text it typed itself. It keeps a record of exactly what it put on screen and verifies that the text is still there before changing anything. If the document moved underneath it, if the app is one it cannot verify, or if you have clicked somewhere else since — it refuses and tells you why, rather than deleting something and hoping. It will never eat a paragraph you wrote by hand.

"Scratch that" and "undo that" are not the same command. Scratch removes precisely what Mynato typed and nothing else. Undo asks the app to undo, which always works but takes back whatever that app considers one step — sometimes more than you meant. When scratch cannot be certain, it offers undo instead of guessing.

If a command is not recognised, it is typed as words, exactly as you said it. Nothing is silently swallowed.

Which one should you use

• You need to run the whole Mac by voice. Voice Control. It is free, it is deeper than anything else available, and correction is only one part of what it does.
• You are writing prose and want to fix mistakes as you go. A dictation app with a correction grammar, ours or another. Test it on a name it will get wrong before you trust it with anything real.
• You dictate a sentence occasionally. Apple's keyboard dictation and the keyboard is genuinely fine. Not everything needs a tool.

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Mynato's correction and control commands are part of the paid tier; the deletion commands, undo that, cap that and the formatting ones are free and stay free. It needs an Apple silicon Mac and macOS 13 or later. Pricing is here and there is a free tier that does not expire.