slip of the tongue
US /slɪp əv ðə tʌŋ/
UK /slɪp əv ðə tʌŋ/
1.
a minor mistake in speaking, usually unintentional, that reveals a hidden thought or feeling
:
•
It was just a slip of the tongue when I called him by the wrong name.
•
She made a slip of the tongue and revealed the surprise party.