slip of the tongue
US /slɪp əv ðə tʌŋ/
UK /slɪp əv ðə tʌŋ/

1.
실언, 말실수
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.
그를 잘못된 이름으로 부른 것은 단지 실언이었다.
•
She made a slip of the tongue and revealed the surprise party.
그녀는 실언을 해서 깜짝 파티를 들켜버렸다.