Use 'misspeak' to show you recognize and want to amend a verbal mistake. I misspoke earlier—the correct figure is 200, not 20.
Pro Tip 2/3
Unintentional Slip
Mention 'misspeak' when you've accidentally said something you didn't mean to. Sorry, I misspoke; your appointment is at 3 PM, not 4 PM.
Pro Tip 3/3
Acceptable Phrase
'Misspeak' is not too formal or informal; it can be used in various talking situations. In last week's presentation, I misspoke about our sales targets.