slip-up ( synonym found)
Definition of slip-up:

°A mistake or error; a minor misstep.
"I think she will forgive an accidental slip-up, so don't worry too much about misspeaking."
Definition of slip-up:

°A mistake or error; a minor misstep.
"I think she will forgive an accidental slip-up, so don't worry too much about misspeaking."
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